stuck on 45 fps

[taariqamozilla]

while streaming my fps is stuck at a constant 45 fps but only like 20% of my cpu and gpu are being used?? jumps to 65 every now and then but usually sticks around 45. Only when headset is on my head though? Video of it happening (https://www.twitch.tv/videos/355378444##) Oculus rift, Ryzen 5 1600x, GTX 1070, 16GB Ram