Mod: Optimized RTGI

[Jean Roque de Lartigue]

For all people that struggle with getting a decent framerate using RT features, nexusmods user alikoko uploaded a mod that tweaks a handful of RT related settings[www.nexusmods.com] found in dx12user.settings, and it boosts framerate by a noticeable amount (reportedly 35% on a 2060S). I do confirm that framerate goes up, I gained 6~8fps. Let us know how this affect your performance!

EDIT 27/12: comparison screenshots for anyone interested:
v0.3:
https://imgsli.com/MTQzMzAw
https://imgsli.com/MTQzMzAy
https://imgsli.com/MTQzMzAz
https://imgsli.com/MTQzMzA0
v0.4.1:
https://imgsli.com/MTQzMzA1
https://imgsli.com/MTQzMzA4
https://imgsli.com/MTQzMzA5
https://imgsli.com/MTQzMzEw
https://imgsli.com/MTQzMzEx

[WreckWren]

R7 2700@4.2/3600CL16
3070@2025
Full RT, Ultra, 4K, DLSS Perf
Avg. FPS before: 27
Avg. FPS after: 34

This was the difference between playable and not playable for me.

[Jean Roque de Lartigue]

Publicado originalmente por WreckWren:

R7 2700@4.2/3600CL16
3070@2025
Full RT, Ultra, 4K, DLSS Perf
Avg. FPS before: 27
Avg. FPS after: 34

This was the difference between playable and not playable for me.

Which .ini file did you use? Quality or Performance?

[TommyEV]

I tried again with my 3080 (10gb) + 5600X at 1080.
At the hangman tree I went from 72 fps to 79 with the V0.5 performance ini. I expected more. In other areas where i have screenshots form yesterday the performance seems to be the same or even less. It's inconsistent.

What I have noticed is that "normal" RT uses 99% of my card whereas this modified RT doesn't. Has anybody seen any similar behavior?

Regardless of RT on/off, should a 5600X be a big deal in terms of bottlenecking and whatnot?

[ElBarto56]

looks good but the loss of quality is a little bit too much for me judging from these screenshots...

[Spjauk į šikną]

judging by the screenshots it just disables stuff

[Atriox]

Publicado originalmente por Nameless:

judging by the screenshots it just disables stuff

Yeah, that's all the mod does. It's not fixing anything.

[Setech]

Publicado originalmente por Atriox:

Publicado originalmente por Nameless:

judging by the screenshots it just disables stuff

Yeah, that's all the mod does. It's not fixing anything.

This is exactly what 'optimizing' ray tracing looks like. The only choice you have is to reduce the amount of calculations to do and the only way to do that, is to reduce ray counts and bounces and/or features entirely.

[!v3t3R_]

Here is mine https://imgsli.com/MTQzNTAw
After using optimized file even in quality mode game looks like there is no RT anymore.
But yeah, got a bit more FPS even in Novigrad, except my 12700K has bottleneck there.

[Jean Roque de Lartigue]

Publicado originalmente por Atriox:

Publicado originalmente por Nameless:

judging by the screenshots it just disables stuff

Yeah, that's all the mod does. It's not fixing anything.

Actually fixing the game's poor RT performance is something only CDPR can do, as it needs working at engine-level. Modders can only do so much.

[Setech]

Publicado originalmente por Jean Roque de Lartigue:

Publicado originalmente por Atriox:

Yeah, that's all the mod does. It's not fixing anything.

Actually fixing the game's poor RT performance is something only CDPR can do, as it needs working at engine-level. Modders can only do so much.

Unless CDPR has some kind of super genius working for them to make the equations be more efficient while retaining the image quality, there is only so much you can do on the engine side as well.

Considering we have some of the smartest scientists working on light traversal algorithm's for other applications than gaming, I don't imagine it's possible to make them a whole lot more efficient.

See algorithm overview on this page:
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)

[TimmyP]

Those values can be adjusted in real time. There is obviously a ton of optimization CDPR could do.

But this patch was a deal with nvidia to push idiots to buy 4000 series, so 2000/3000 have to wait.

[Jean Roque de Lartigue]

Publicado originalmente por Setech:

Publicado originalmente por Jean Roque de Lartigue:

Actually fixing the game's poor RT performance is something only CDPR can do, as it needs working at engine-level. Modders can only do so much.

Unless CDPR has some kind of super genius working for them to make the equations be more efficient while retaining the image quality, there is only so much you can do on the engine side as well.

Considering we have some of the smartest scientists working on light traversal algorithm's for other applications than gaming, I don't imagine it's possible to make them a whole lot more efficient.

See algorithm overview on this page:
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)

There is only so much they can do regarding ray-tracing performance per se, I'll give that to you (thanks for the read, btw).
However, I assume that fixing both the huge CPU overhead on DX12 and the lack of proper multi-threading support should vastly improve performance, and has little to do with the actual optimization of RT algorithms.

[Dae]

This works great.

1440p, DLSS Performance (+NVCP sharpening), full RT with the quality mod, Ultra+ throughout aside from foliage range, hangs around 60fps which is what I'd expect on a 2080S.

I assume it'd run even better once CDPR patches the game further and fixes the obvious memory leak it has.

[WreckWren]

Publicado originalmente por Jean Roque de Lartigue:

Publicado originalmente por WreckWren:

R7 2700@4.2/3600CL16
3070@2025
Full RT, Ultra, 4K, DLSS Perf
Avg. FPS before: 27
Avg. FPS after: 34

This was the difference between playable and not playable for me.

Which .ini file did you use? Quality or Performance?

Sorry, I should have mentioned, this is on Quality.
Performance gets me into the 40s but I felt it was just slightly more of a compromise than I wanted to make. Of course the problems with CDPR's implementation of DLSS are robbing several frames at this resolution so there is still plenty more performance to eek out. I feel like this title is capable of running with full RT, DLSS Perf at 4k60 on this card, if only its myriad bugs were fixed.

[Hellfire77]

I tested dying light 2 the other day maxed out with full rt at 4k and ran all over the place and it never once dipped under 60 frames. Dont know if that's a decent comparison though. I feel I should be able to run this at 1440 maxed with full rt with an i712700, 12gb 3080 and 32 gb of ram.