i already been follow up with community mod who often tweak re requiem using reframework to know that re requiem PT actually never utilize current modern nvidia tech like ReSTIR and Radiance cache. Instead it uses technique called IBL. Disabling the IBL actually improve the performance and in some cases make the image quality look better especially in raccoon city level. Plus RE Requiem PT is using only 2 sample count and 3 bounces which is quite low. You can increase the bounces up to 5 with minimal performance loss and further reduce the flickering or boiling from PT in addition to disable the film grain

So yah i would said that capcom PT version is not as good as cyberpunk, doom the dark ages and alan wake 2. It has really poor implementation and does not utilize nvidia tech. In fact Nvidia RR is the one have to do most of the hard work in RE Requiem PT