NVIDIAGameWorks
[Runtime Bug]: Massive performance regressions since 0.3.0
Describe the bug
There are measurable performance regressions from build 0.3.0 all the way up to the very latest GitHub Actions builds. This applies to all games.
I performed benchmarks after a user brought up performance regressions in our Discord server: 0.3.0 = 95 FPS 0.4.1 = 86 FPS 0.5.1 = 82 FPS Latest action builds (bridge 85 and dxvk 603) = 65 FPS
How do you reproduce the bug?
I tested in The Simpsons Hit and Run.
Use this rtx.conf file: rtx.zip
I loaded the game with these settings in Lucas' Launcher:
Simply load the game and do not move the camera. Measure FPS after 1 minute
What is the expected behavior?
Performance should not have regressed this massively
Version
All
Logs
No response
Crash dumps
No response
Media
Look here for screenshots: https://discord.com/channels/1028444667789967381/1228440201139851295/1269307220361740359
Small update here. Coincidently, we have been looking at GPU performance around the time this issue was filed. As such we have a number of performance improvements submitted over the last couple weeks. Below is a complete list of all the optimizations to date.
With all of these performance should be better than 0.3 in some cases (particularly in decal/particle heavy scenes). In other cases (more general cases) there is still some work to do. Please, if you get a sec, try the latest action build on github and let us know.
https://github.com/NVIDIAGameWorks/dxvk-remix/commit/1cec750e77b78b899ce8616cf5fe0742ef766020 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/0d423f8df79c07d0c486afd4da1ada92b17bea62 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/b698be7001a21ed2ba2e4fb842ce84ae79939105 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/f4e44193be8de63e048c8ca8c2ace0e1609ffc64 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/33e8c58cda95107772e4a1eb86bc80c1712c6a22 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/5b3957bad1de4fa5b3935c2d5f639266d39a29b8 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/eaed7a2dbf899f52fd7a7e39f06f51b67b439b2f https://github.com/NVIDIAGameWorks/dxvk-remix/commit/553a6ecc0948ea6298157e9d3acf29371db78710 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/bae3c2ce6fcd6938e6ccb09de0d1cdfe54161419 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/c9b44c3d7fc857210abad96f0a76da96ce877078 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/c9b44c3d7fc857210abad96f0a76da96ce877078 https://github.com/NVIDIAGameWorks/dxvk-remix/commit/277c3f35ec7383ea1b270ddd5e1030879d3174b7
The latest submodules fix the issue I noted in #503 and performance is indeed better than Remix 0.3. Thank you!
Awesome! I did a test about 5 days ago and it was getting closer and closer to 0.3.0 on Nvidia GPUs. You can read my testing here: https://discord.com/channels/1028444667789967381/1028444668918235197/1275210861241303182
I'll test again next week when I have some time. Thank you guys 🙂
Thank you. @McMasterGold seems we should close #503 based on this comment.
@Kim2091 thanks, I see your testing may be missing two cruicial optimizations. I expect a 5~10% speedup on your previous test
Okay, so I just tested the latest builds as of this post, and sadly performance isn't quite at 0.3.0's level in this specific test.
It's about on par with 0.4.1. 0.3.0 still has a lead of about 9 FPS.
However it's extremely impressive how quickly performance was restored to 0.4.1's level 😃
Hi @Kim2091 - as you've noticed, we've been hard at work making headway with runtime performance. We've tackled a lot of the low-hanging fruit to bring it in line with prior runtime versions. We'll continue to make more improvements (some by detecting additional low-hanging fruit, and some by pursuing new techniques).
If you identify any parts of the runtime code that may give us a clue of additional avenues to pursue, feel free to share by filing a new ticket.
Otherwise, we'll be closing this ticket and keep working to make the runtime perform better.