Well fuck my ass, a dude on reeee is saying that if you install the texture pack, have 16gb of vram but you use the high texture setting, the texture pack being installed still somehow improve the textures without the choppiness....maybe that's why i barely noticed any difference in visuals with the texture pack installed but not selected...
Wtf capcom?
Set your textures to high. The pack is still utilized. At highest it can stutter if your PC can't brute force it (mine can't - probably lacks the added streaming bandwidth needed). The visual difference appears negligible, but it is not something I've investigated thoroughly.
With 16 GB VRAM and the pack installed, the high setting works well and looks great.
EDit: apparently multiple people confirmed this...