How To Fix Assassin’s Creed Unity Errors, Crashes ,FPS Drops, Stuttering, ACU.exe Has Stopped Working


Ubisoft released Assassin’s Creed Unity on November 11, and still, many players are encountering a lot of errors and bugs when trying to play the game or launch it. The Assassin’s Creed Unity errors that they reported are: Stuttering, Random Crashes, FPS Drops and ACU.exe Has Stopped Working, all of these errors are making the game unplayable. Here are the exact issues and what people reported. You will also find workarounds and solutions, to fix each issue, below.

Update: If you are looking for a guide on how to fix the Assassin’s Creed Syndicate issues, check our tutorial here: How to Fix Assassin’s Creed Syndicate Errors, Crashes, FPS Issues

First, you need to make sure that you meet the minimum system requirements before applying any of our solutions or workarounds to your game.

Minimum System Requirements:

  • OS: Windows 7 SP1, Windows 8/8.1 (64-bit versions only)
  • Processor: Intel Core i5-2500K @ 3.3 GHz or AMD FX-8350 @ 4.0 GHz or AMD Phenom II x4 940 @ 3.0 GHz
  • Memory: 6GB
  • Graphics: NVIDIA GeForce GTX 680 with 2GB VRAM
  • DirectX: 11
  • Hard Drive Space: 50GB

Recommended System Requirements:

  • Processor: Intel Core i7-3770 @ 3.4 GHz or AMD FX-8350 @ 4.0 GHz or better
  • Memory: 8GB or more
  • Graphics: NVIDIA GeForce GTX 780 with 3GB VRAM

Assassin’s Creed Unity Errors:

#1 Assassin’s Creed Unity Stuttering

Some players reported that they are encountering stuttering during the game or the cut scenes. These users meet the system requirements of the game, and they updated their GPU to the latest driver. If you are one of these players, check the workarounds below and you might solve your issue.

“The game stutters like hell, anyone else having this problem? I keep all times above 30 FPS but what’s bothering me is this stupid stuttering.”

“Anyone else having problems with random stuttering? I’m trying on high/medium settings and no matter what it stutters. I’m running all the req hardware AMD – FX 8350 16 GB ram and GTX 770. Any help?”

Workarounds: To fix the stuttering in the game, go to the tutorial at the end of the post and there you will find our patch. Apply it to your game and select the “Performance Issues” box to fix the stuttering.

  • If you are using a laptop make sure that you run the game on your dedicated GPU and that you plugged it in
  • Go to Nvidia Control Panel and increase the Max frame value to 2
  • If you recently updated your drivers make sure that you restarted your PC
  • Disable SLI

#2 Assassin’s Creed Unity FPS Drops

You might encounter constantly low fps or fps drops from time to time. A lot of players complained about this issue, read below what they said about that.

“Am I the only one who is getting very low fps even though I have a good PC. Or can anyone help fix this.”

“Everything in my PC is above minimum except my GPU, which is an AMD Radeon HD 7750, and even with the newest drivers and everything on lowest the fps is so low it’s unplayable. 10-20 fps max. If I look up at the sky I can get 45-60 fps but, alas, you can’t beat the game while looking at the sky.”

Solutions: To get rid of the drops and improve your overall framerates, go to the end of the post and you will find a tutorial. You need to apply our patch to your game and select the “Performance Issues” box to optimize the framerates. Go there for more details!

  • Disabling TXAA improves FPS.
  • Disabling PCSS Shadows/Soft Shadows’ improves FPS.
  • Disabling Vsync will double your FPS, though the game will look blurry.

You can also check the guide on how to optimize your game for maximum performance here on Nvidia’s website.

#3 Assassin’s Creed Unity Random Crashes

For some players, the game randomly crashes while they are on a mission or when they try to start it with the Uplay Launcher. For an Assassin’s Creed Unity crash fix, read the solution below.

“My PC monitor loses signal then my computer rig ends up crashing and restarting. I have no idea what’s causing this; I have no other problems like this in any game. Anyone having a similar problem?”

Solution:  To get rid of the random crashes and also, the startup crashes you need to optimize your game with some tweaks. Check our tutorial at the end of the post on how to do that!

#4 Assassin’s Creed Unity ACU.exe Has Stopped Working

You might get this crash whenever you try to start the game and you can’t do anything to fix it, even if you updated your drivers and verified the game files. You can use a quick workaround to fix this issue, check it below.

“My computer meets the system requirements for running on Assassins Creed Unity but won’t launch, whenever I double, click the game.When I double click the game, it opens Ubisoft and opens the little window with the ACU title and then says the game has stopped working.”

Workaround: You can fix the ACU.exe issue with our patch, that you can find below, or you can follow this workaround:

  1. Start Uplay
  2. Go to Settings
  3. Uncheck “Enable in-game overlay for supported games.”
  4. Launch the gameAssassin's Creed Unity Crash

#5 Uplay Not Working

If Uplay is not working for you and you are unable to launch it, try to re-install the launcher. If you are unable to connect to the Uplay, it might be an issue with the Ubisoft servers, wait until they fix it and until the servers are back online.

#6 Assassin’s Creed Unity Can’t Connect Error 0X70000093

To fix the 0X70000093 errors, you need to make sure that your internet is working properly. Also, try to restart your router/modem, this should fix the issue. It could also be a problem from Ubisoft servers, in this case, you can’t do anything and you need to wait until they fix it.

We hope that our Assassin’s Creed Unity Errors solutions helped you fix your errors and that you can now play the game. If you have any questions or problems, please contact us with a comment below or by using our Contact Page also if you have other errors tell us and we will help you fix your game.

Below you will find our tutorial on how to fix the major issues in Assassin’s Creed Unity. Please read it carefully and apply every step to fix your issues properly.

Assassin’s Creed Unity Tutorial To Fix Major Issues:

Our team of developers managed to release a patch that helps you fix the errors described above. You can see how our patch looks like below, where you can also find a tutorial on how to use it and a download link. Please follow the tutorial step by step before asking any questions regarding your issues. Our patch won’t interfere with your Steam account, it will just change some files and .dll’s in the game folder for the errors to be fixed.

Follow the tutorial below to apply the patch correctly to your game.

How to apply our patch:

  1. You can find the download link here: download
  2.  Extract the downloaded archive on your PC, and open the patch from the folder.
  3. Your GPU will be selected automatically, make sure that you use your dedicated GPU if you have a laptop!
  4. Select the game executable from the game folder, if you used the default install folder it should be: “C:\Program Files (x86)\Steam\Steamapps\common\Assassin’s Creed Unity.”
  5.  Select your issue or issues from the box to the right and click the corresponding “Fix” button.
  6. After your errors are successfully fixed, you can click the “Launch Game” button and play the game.

How to download: Well, you might think that our download service is pretty annoying but is very effective. To download you just need to complete a simple offer, it usually takes a few minutes, and after that, you will be able to download the patch. We use this service because is the only way to support our developers and to keep releasing and updating patches for games. Thank you! We hope you understand us and have fun playing Assassin’s Creed Unity!

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  1. Dread says

    Game runs fine but everyone once in a while when I jump to the ground it disappears and I fall into a void of nothing than die anyone else having the same problem?

  2. Jason says

    I have problem with faces. i can only see eyes and teeth,thats very wierd.Does anyone knows solution?

    1. Denis says

      We are going to investigate into this problem and come with a fix for this soon, stay tuned!

    2. mohsin says

      its may be a error of pixel shader of ur graphic card ..your pixel shader may b less than a minimum req

  3. paulfanc says

    I’ve learned the hard way not to buy Ubisoft games at launch, they usually got some issues but thank you for this tutorial!

  4. Mike says

    When I play the game runs fine for about 5 minutes then it just goes black and then I am back at the Ulay screen

  5. Luis says

    Can you start a second walkthrough in the game?

    1. Denis says

      Maybe, we’ll try to do a walkthrough too.

  6. daniel says

    i was downloading assassins creed unity i put in disc five and it said that the setup was rong please instert right disc does it mean my game is stuffed

    1. Angela says

      i have the same problem what does this mean

  7. jackary says

    i have an intel core i7 3770k gtx 780 16 gb ram and the latest driver for ac unity but in some areas with too many crowd my fps can’t go above 50 even if ichange my settings to the lowest 🙁 will this fix my fps problems?

  8. D says

    Next time don’t pre order a game. You’re part of the reason why Ubisoft won’t care to fix it because you already gave them your money.

  9. Chase says

    would this work even if I have a 2.9 ghz amd processor (can’t remember name) with my GTX 650ti graphics card to get me up to stable FPS instead of 7-10 fps

  10. Terry says

    I like the game so far. I’m playing the PC version and i haven’t run into any bugs so far. Smooth framerate at 2560x 1440 res, great graphics on ultra settings…and i’ve still never had a problem with uplay. If you liked the other Assassin’s Creed games you’ll like this one

  11. Marc says

    Apart from the framerate drop, which isn’t that bad on the Xbox One (at least not to me). The game is great! Story wise the game is fine, not anything too different from past AC games

  12. Sebastian says

    Guess they didnt learn from watch dogs

  13. darki says

    I’ve been able to look past the game’s numerous shortcomings for the most part, but the final encounter (spoiler free) is making that hard to do.

  14. Lawk says

    So… did this game actually add anything that isn’t worn out like an old shoe? Black flag was the first Assassin’s Creed game I played since the 2nd one, and it was pretty awesome. But without the ships and stuff, it was still the same old AC crap. This sounds like it’s nothing but the same old AC crap again… Except this time, without the ships and stuff…

  15. Billy Bob says

    This is my favorite AC game so far I love the Co op, paris, the side missions, all the content in the game, and most of all the customization is incredible!

  16. VIC says

    I have really enjoyed playing this game so far! Good game.

  17. Subotai says

    Will this run on Intel i7 4700MQ CPU @2.40 GHz 64 bit operating system 8gig ram with Nividia GeForce GT 740M?

  18. RandomName says

    Everytime I try to go online I keep getting error code 0x70000093 and rarely error code 0x60000001 when I try going online or anything.

  19. Stijn says

    Help me !

    After successfully activation AC Unity key cant find game in Uplay games page. Cant start downloading, game does not show up in my games page on Uplay. I send message to Ubisoft support but no answer yet. Any help ?

  20. Gablin says

    My game keeps crashing before I even get into the game, and if it by small chance, it lets me play but instantaneously crashes when I’m doing the king of beggars quest log.

  21. Cayke says

    Am i the only one that cant connect to coop? my queue seems to go forever and the only way to cancel it seems to be to exit the game

  22. James980 says

    Is anyone else having the problem of adding people to your CLUB and their names showing up as your name?

  23. Jojotroll says

    This fixed my game, thank you!

  24. Maucolima says

    I have the ACU.exe stop work when I play sequence 2

    1. ali says

      yeah me too

  25. Tyler says

    See this is nice but the xboxone and ps4 still have the problems you just created a fix for the computer and left the counsels alone.

  26. Whoadi says

    It keeps telling me ubisoft servers are down error 0x60000001 I cant play online…wtf

  27. evan wells says

    so my game froze, and I had to open up the task manager and stop the game. I go back and try to restart the game but what do you know? when I click continue it stops loading and says that assassins creed .exe has stopped working. PLEASE help me out here I really don’t want to start a new game

  28. jos says

    I ll try this out

  29. dani says

    I have problems with sequence 2 memory 1, it just hangs up in loading, how can this be fixed?

    1. anu says

      me 2 ,,the same problem

  30. jack says


  31. hadi says

    hi.please help me for error ACU.exe has stoppted working

  32. kalelo says

    Hi guys!

    Bought the game yesterday for PC, installed and patched it, but it keeps crashing 5 seconds into the first sequence….
    What to do?


    1. kalelo says

      No sorry but same story again..

      1. kalelo says

        I have also tried to change the graph

  33. TOM1221 says

    I have error 0xc000007b how to fix them

  34. hakawati says

    Waiting 3 days for an answer… Ubisoft Support is fast as a turtle!
    I will follow your instructions.

  35. Mridul Gandhi says

    Will it wrk for Sequence 7 memory 3 glitch ? 🙁

  36. Aditya Prakash says

    i have gtx 650.. the ubisoft and nvidia icons run okay but when i get to the press any key screen my screen looks so brightfull. i can’t clearly see the upper right buttons display. i tried changing the brightness but it didn’t help and my game is crashing.. help…

  37. ashley says


  38. Liam says

    Will this fix the s7m3 glitch? A lot of people have been having it if you could look into it it would really be great thx

  39. prateek singh says

    I’m having problem with sequence 7 memory 3 will it fix it

  40. Emily Keene says

    I’m on sequence 5 of AC Unity and it says its saving but when I die I go back to the beginning of the sequence. Is anyone else having this problem and I wish they could make a fix for this. Also this is the xbox 1

  41. David says

    Hi! I play the game on a pc. I had finished the game, had almost everithing, The rank was Master and i was playing to get Money to buy the rest and to achieve the Legend Rank…But today when I started the game it started from the begining, as if today was the first day…But the actions in Uplay are done as well as the achivements…How do i solve this?

  42. md riaz says

    Sequence 2 memory 1 acu.exe has stopped working. appcrash found loading error any solution this please help me

  43. Amir says

    My problem is server error [0*70000107]
    Help pls

  44. Broska Tv says

    You bastard, there are survey!

  45. Blaq Cartagena says

    I bought The Crew and was playing just fine, then all of a sudden it just froze and to this day September 18th 2017 it still freezes on me. I don’t understand why it’s still freezing when other gamer’s have been having the same issue. Also, I have friends that play the game without issue. Can anyone explain this?

  46. pieStardust says

    thanks a lot!!

  47. Venator 4224 says

    Reinstalled unity about a week ago after not playing it for ages. When I exit the customisation menu my whole PC restarts. I’ve reinstalled windows 10 and it still restarts. I’ve looked up fixes and found nothing. Any ideas?

  48. sathya says

    everytime when im starting the game its start from beginning what should I do pls help me

  49. pomen says

    i never buy again games from uplay

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