After short testing, I can't say for sure whether there is any difference in framerate. What I can say is that the problem of texture loading is much worse now. The game takes a very long time to properly show all the textures.

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."