Question Unstable fps

[Classy666]

I play siege 1080p, my fps is in between 190-330
Why is it unstable, like why isn't it always around 240-270 for example , is there a bottlneck in my system, cuz im planing to start streaming and i want it stable.

R5 3600 (75° in game)
16ram 3200mhz
B450m ds3h
2070super (68°)
240ssd 500hdd
650w beonze

 

[rgd1101]

try fps cap?

 

[Classy666]

try fps cap?

When i cap the fps at 144 the gpu usage goes down, does that help when i start streaming? Also capping fps adds input lag doesnt it?