First I have heard of this. Is it hard to do? How do you know FSR4 is active?
I want to run this on my 9070xt.
Might be a bit confusing the first time, to get all things setup. But after you have one game ready, it becomes very easy.
First download the program from Github.
Changes in the Last 24 Hours 7bff360 fixed kmt (cdozdil) a3135cd push kmt for testing (cdozdil) b14c1cd Added comments for FSR4 upgrade (cdozdil)
github.com
If you have any suspicion, you can pass it through VirusTotal to check if it's safe.
I did that and here is the result.
VirusTotal
www.virustotal.com
Then extract all the files to where the game's executable is. For most games this is very simple, but for UE4 and UE5 games, it has to be on the folder where the exe win64-shipping is.
After that, you can run the "OptiScaler Setup.bat" to do things automatically or you can do it manually. This basically changes the name of the "OptiScaler.dll" to match the GPU you have.
Using the bat file, pick option 1, then option 1. This will work for most games.
To add FSR4, you will need the FSR4 dll from AMD. You probably already have the Adrenalin 25.3.1 installed. So the dll is on the Windows folder.
Just search for "amdxcffx64.dll", then copy that dll into the game folder, where all the Optiscaler files are.
Then run the game. When inside the game, go to the game's options and set the upscaler to DLSS.
Then press "Insert" key. The Optiscaler menu will appear.
By default, it will pick XeSS. On the top left corner. Pick the option FSR3.X.
And it will inject FSR4. If you do not have the FSR4 dll in the game folder, it will fallback to FSR3.1
Very important: For any of these mods to work, it's necessary to disable the Nvidia checks, or it will block these mods. Yes, nvidia is a very petty company.
You will need a file taht is in the the mod "dlssg-to-fsr3 mod". I put the link to it at the bottom of this post.
Just run the "DisableNvidiaSignatureChecks.reg" file. You will only need to do this one time.
Optiscaler also has a ton of options to tweak. You won't need most of them. But if you notice some textures are low resolution, you might need to setup the MipMap Bias.
Just pick the upscaler scaling. For example, Quality. Then press calculate, and it will enter the correct number automatically. Then press "Set".
Whenever you change anything in this mod, and you want to keep that, press the "Save ini" option at the bottom.
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If you also want to replace Reflex with Antilag2, you will need fakenvapi.
Download it from Github:
Changes: Fix wrong memory free Other miscellaneous Full Changelog: v1.2.0...v1.2.1
github.com
Then extract the files to where the game's exe is. Which is also, where all the Optiscaler files are.
Then enter the game, go to the options menu and turn on Reflex.
In some games, there are 2 options. "Reflex" and "Reflex+Boost"
The last option is for Nvidia GPUs to keep the clocks higher, at a steady rate, to improve frame pacing.
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Finally, if you want to replace Nvidia Frame Generation, you will need dlssg-to-fsr3 mod.
Adds AMD FSR 3 Frame Generation to games by replacing Nvidia DLSS Frame Generation (nvngx_dlssg).
www.nexusmods.com
Just copy the files to the folder where the game's exe is.
Then go to the game's options and turn on nvidia FG.
You can also check the Antilag2 and FG settings in the Opstiscaler menu.
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P.S: for CP2077, you can't use the inputs from DLSS. It has to be from XeSS of FSR3. So you have to choose XeSS or FSR3 on the game's menu.
I prefer the XeSS inputs, as it gave a better image stability.
