Noticed that when its raining and i'm zoomed out, my FPS drops pretty bad and every action has at least half a second delay. (Zooming in all the way alleviated the issue, but that caused me to lose my full range of vision)
Steps to reproduce:
1) Zoom in all the way
2) Wait for rain/heavy rain to begin
3) Progressively zoom out
4) While zooming out, attempt to perform actions like strafing, moving around, or even performing actions like attacking.
Expected Result: Player should not expect to see any drop in FPS or delay in actions being performed while rain is occurring.
Actual Result: Player sees significant drop in FPS and delay in actions due to rain.
Workarounds: Player can zoom in during rain to reduce the FPS drop. (But comes at a cost of vision)
Other notes:
Fog didn't seem to be a problem at all, including thick fog and darkness.
I suspect it might have to do with rendering the rain puddles at such a large view distance, but my focus last night was on just playing, and not actually trying to debug.