Plenty of guides out there for you to determine the settings yourself.
Leave the Output Mode as SIMPLE
Recording Quality: High Quality, Large File Size
Depending on the game you're playing recording at 90-120 FPS will nudge you near 100% load on your GPU, you need to always keep around 10-15% GPU resources free to cover the overheads of compiling the scenes/rendering.
If you come across drop frames, encoder overload, then you need to cap your frames to reduce your Hardware load.
If you run into issues then come back here with a full log of your attempt to record/steam etc and we can advise on what settings to adjust.