(Not sure if should post here or in 50 series thread so done both for now as may be relevant for all NV cards....)
Right, had some proper time today to do some semi-scientific testing of this Nvidia drivers **** show and the problem with Gsync/ Vsync and Frame gen/ multi frame gen. Below are my own notes which I thought I'd share in here in case they're useful for anyone else.
NOTE: this is on a 5080 and I think this chronic issue is mostly 50 series specific (especially as it involves multi frame gen) but I'd be interested to know if x2 frame gen is also having these issues on 40 series - if you use the latest DLSSG DLLs.
NOTE: This is testing with the latest drivers 576.02. They have definitely NOT fixed the issue which the release notes purport to have done. The exact same behaviour occurs on 572.83 and earlier too.
ALSO NOTE: Please don't just say "all runs fine on my PC". I would bet a huge amount of money that if you actually deep dive into it, it will have these issues.....
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FRAME GEN NOTES
APRIL 2025
'DLSS4' FG (x2) and MFG (x3 or x4) do not work properly with ANY DLSSG DLL files of v3.10.X and above when using the long term gold standard of Gsync on, Vsync on globally in NVCP, Vsync off in game, Reflex on in game if it has it. 'DLSS3' FG (DLSSG DLL v3.8.1 and below) still works fine with this gold standard, but obviously x2 FG is all you can get with this.
With 'DLSS4' FG (DLL files of v3.10.X and above) and Vsync ON in NVCP, THE BAD SYMPTOMS ARE:
x2 FG will NOT run with GPU at full usage so you lose ~20% performance, and MFG x3 or x4 mode will often just not work, at all! It's ALL to do with VSYNC settings....
....If Vsync is set to OFF or FAST in the NVCP/ NV App game profile then 'DLSS4' x2 FG works totally as it should with max GPU usage AND x3 and x4 mode also fully work! - BUT - with 'driver level' Vsync off *some* games are prone to the old school problem of screen sync 'tearing', which is ******* horrible, EVEN if you have GSYNC on AND keep FPS below monitor refresh rate with an FPS cap (eg in RTSS). *Some* games work fine this way with zero tearing and can keep fps at eg ~117fps cap on a 120Hz screen (remember in-game Reflex does NOT WORK with global/ driver level Vsync off, so you MUST use an FPS cap!)
Assuming 120Hz screen, *Some* games benefit from a lower cap of ~110fps which can 'almost' totally mitigate the tearing, but it seems to be game dependent/ random.
Until Nvidia properly fix this issue (driver and/ or new DLSSG DLLs) - if you can be bothered - the best FG settings need to be done on a per-game basis. A few different examples....
Cyberpunk 2077
- Vsync on globally in NVCP or forced on in App profile
- Use DLSSG v3.8.1 (latest 'DLSS3' standard x2 only DLL)
- Reflex on in game
Half Life 2 RTX
- Vsync OFF or FAST in App profile
- Use latest DLSS4 DLSSG Dlls
- Frame cap of 117fps (zero tearing)
Stalker 2
- Vsync on globally in NVCP or forced on in App profile
- Use DLSSG v3.8.1 (latest 'DLSS3' standard x2 only DLL)
- Reflex on in game
Indy and the Great Circle
(DLSS3 DLLs will not work with this game - crashes on load)
- Vsync OFF or FAST in App profile
- Use latest DLSS4 DLSSG Dlls
- Frame cap of 117fps (zero tearing)