I've been trying to get this working, but have encountered a wall, wondering if anyone has it working currently through some black magic fckery?

The mod in question is the DLSS-G -> FSR 3.1 FG mod ("DLSS Enabler"):

https://www.nexusmods.com/site/mods/757?tab=description&BH=4

Basically for games that support DLSS-G (frame generation part of DLSS 3) like The Witcher 3 next-gen, it replaces it with FSR 3.1 FG.

I have successfully gotten the mod to replace it in Witcher 3 Next-Gen (GOG), following the instructions, looking at the logs and diagnostics. It is suddenly available in the game menu, and it correctly forces Nvidia Reflex on and disables vsync and frame limits. So far so good.

The issue isn't the Frame-Gen part - the problem is enabling DLSS with this mod on. As soon as I load into a game with it on, or turn it on in-game, it softlocks, crashes, and I need to tty my way out killing the game. It is easily reproducible by toggling DLSS on and off. Without this mod, DLSS works fine.

My relevant specs: PopOS, X11, 32gb ram, Ryzen 7 3700x, Nvidia 4070 Ti Super 16gb, Nvidia drivers 550.67, Kernel 6.9.3, Heroic Flatpak/Lutris flatpak/deb,wine-tkg 9 (most recent through Protonup-qt, but wine-ge-8-26 also works with FG somehow despite Wine 9 apparently needed for FG), Mod installation: using winmm.dll (version.dll didn't work, but dxgi.dll method works too)

This mod should work, and there are many reports and YT vids about it working on Linux too with Witcher 3 and other games, dating all the way from 6 months ago. Was there since some update/regression that broke things somewhere?

Any ideas? Does anyone have it working currently? Please help :)

Note: Original post on Witcher 3 GOG forums, added here for more exposure.

Hi artur,

This worked! Incredible :) Thank you so much.

On line 157, I changed:

OverlayMenu=false

It no longer crashes with DLSS on. When I turned on DLSS-G (or in this case, FSR3.1) my fps went from 50 to 100+!! On RT Ultra. Insane man, good job with the mod!

The only issue is that with FrameGen, there is insane shaking jitteriness when moving the camera around or in movement. What could it be? I tried playing around with Reflex (off,boost,on) in the ini file, but it didn't make a difference. I turned off Mangohud too, but same.

Do you know why? Or is this the "ghosting" effect? It's pretty bad, anyway to minimise it?

Make sure to disable vsync and fps limiters. Reflex under Linux is broken in dxvk, so DLSS Enabler tries to disable it behind the scene

You can also try mod's built in fps limiter, it can stabilize fps too.

Jitterness is not to be expected on any platform (windows/linux) nor any gpu supported by DLSS Enabler.

Btw. When enabling DLSSG or FSR3, keep a close eye on VRAM usage. Frame Gen eats up to 800mb of VRAM on its own. If you run out of it, accordung to NVIDIA documents, DLSS may crash the game (while FSR3 may struggle to work)

Thanks for the tips, man!

It seems to have been some kind of glitch, as I toggled DLSS on and off and the jitter and shakiness disappeared. Weird.

Oh well, off to enjoy 100+fps RT Ultra Witcher 3 next-gen :)

See you in 200 hours or so of playtime. It's my first time.