Off the top of my head this problem exists so far with Fortnite and CSGO. Basically the game 'feels' different. The best way to describe it is an input lag/slow motion feeling when playing. Of course the games perform well when I'm not streaming. When monitoring CPU, GPU, and RAM loads/temps everything is stable and normal when streaming the games. I have a log, as well as specs posted below. Please ask questions as needed!
Log: https://hastebin.com/raw/tikihuguba
CPU - Ryzen 5 2600
GPU - GIGABYTE GTX 1060 WindForce 2X OC
Mobo - ASRock AB350 Pro4
RAM - G.SKILL Ripjaws V Series 8GB
PSU - CORSAIR CX Series CX600 600W
Log: https://hastebin.com/raw/tikihuguba
CPU - Ryzen 5 2600
GPU - GIGABYTE GTX 1060 WindForce 2X OC
Mobo - ASRock AB350 Pro4
RAM - G.SKILL Ripjaws V Series 8GB
PSU - CORSAIR CX Series CX600 600W