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)
RAM 3166HZ
GTX 1080

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.