Dec 26, 2018 · I'm trying to get into streaming, I built a PC that I was sure could handle the task. (8700k, 32GB Gskill ram, GTX1070). I easily get over 100 fps gaming at 1440p on Fortnite. As soon as I open streamlabs OBS (Not streaming, just opening the app) My Fps tanks to 60 in fullscreen. I do realize... In some cases using 3rd party in-game overlays could cause additional FPS drop or instabilities, especially when you have multiple concurrent overlays running. If you ever encounter any issues, try disabling them and see if that would increase your performance or stability.