I can do that, if for no other reason than I love to test and tweak. 
I did test the different core assignments using TAA, DLSS DLAA, and DLSS Quality. The latter renders at 2K and to upscales to 4K on my system, and I saw a median 30% FPS increase, and a 20% 1% Low increase. That definitely points to a 4K GPU bottleneck.
TAA and DLAA were pretty even, but they were rendering at full 4K.