Ever since the patch was released earlier today, my game has been stuttering so badly that it is unplayable. The issue of being locked to spectator has been fixed, however. At one point it was running smoothly for about 10 seconds, then it froze for 10 seconds, and went back to stuttering like crazy. It's bad all the time, but it gets worse when there are lots of things going on (firefights, explosions, etc.)

My specs are :
Intel i5 4590
msi gtx 1080
8 gb ram
Windows 10