Modder stoker25 has released a new version of the DLSSTweaks program – it now supports Red Dead Redemption 2. Thanks to this, you can forcibly add DLAA anti-aliasing technology to the title.
At the same time, a new DLSS Ultra Quality preset became available, which is usually not available for use. You can set it up manually. Here is one of the video comparisons of DLAA, DLSS 3.1 and TAA in the game:
Download DLSSTweaks for RDR 2 Can on the NexusMods website.