I've been getting large FPS drops after the last patch. While I used to basically always have FPS at above 100, now it's fluctuating between 60 and 140.
Ryzen 2600 (slightly clocked)
Most of my graphics settings are on medium. Anti-aliasing FXAA, anisotropic 4x, low-resolution shadow maps. Texture Streaming Pool is set to High. Changing it to Off didn't seem to make much of a difference.
I haven't experimented with this rigorously, but from brief anecdotal experiences it seems that indoors are often pretty bad; lots of vfx may affect it; it seems to get slightly worse after a few games; and when it happens I can often see stuff clipping in in the far end of the view frustum.