Agreed I see a direct correlation between rain and low fps,however it also seems to be something that happens over time like a memory leak.

I am a server admin and assumed it was the server having an issue. Playing with 4 friends and FPS was around 5fps. Restarted server and it was even worse. Tried two more restarts with not improvement. All of our pings were around 30-50ms and no desync. Please push a hot fix to resolve this.

For us we saw a correlation between rain/thunder and this issue.

Having same issue here. Wouldn't mind a time roleback to before I was dead. ;)

Okay so was able to log into another Hardcore server play for about 10 minutes then go back to my server and the "You are Dead" was fixed.

Same thing about 2 hours later, "you are dead" with no option to respawn.