This DLSS version (with FSR FG for every other frame) is being asked to do rather a lot. https://youtu.be/clNHjJi00Bw?t=174
What should be getting Sony on the phone with the developers is how unstable and aliased the base PS5 version is in comparison. SIE published this only two years ago and the dev did add PSSR in a Pro patch so porting QSSR to the base PS5 should not cost that much dev time.
Do the work, even if this franchise is no longer part of the Sony portfolio (future titles to be self-published).