I have been streaming all week playing League of Legends and have had no issues at native 1920x1080 30fps. I recently started to lag randomly and it it makes for difficult game play. I've lowered the game settings all the way to low and still don't achieve 144 fps, or even 60 for that matter. I changed various things on OBS to make up for the fact and nothing has worked thus far. The only thing I can think of is a windows update that happened the night prior, but I can't imagine it haven't that big of an impact. I've tried running in administrator and restarting my computer several times.
I7-8700k
32GB Ram
1080ti
proper cooling
etc
I7-8700k
32GB Ram
1080ti
proper cooling
etc