I have a gtx 1080, i7 6700k, 16GB of 2133 Hz ram and OBS is running on an SSD. I used to use streamlabs OBS and the game worked kind of fine but the frame rate on stream tanked. I've moved over to OBS studio and now the game stutters really horribly and the mouse input feels wrong. I'm playing at 1080p and OBS is downscaling to 720p and capturing at 30fps. my bitrate is 2700. Every other game works fine at 1080p, a lot of frames are lost compared to when I'm streaming and I play at 1080p but they run pretty smoothely. Even TF2 works fine, I only have issues with CSGO.