>>107049690
Barely using the GPU indicates you cannot achieve enough FPS.
Are you capping your shit to 60 FPS? Remove your FPS cap.
If you aren't capping your FPS, but still can't utilize 100% of your GPU, you're probably playing a game that is capped itself. If your game isn't one that caps itself, you may just be CPU bottlenecked.

What processor do you have?
If you're currently gaming on 1080p, you should at least be aiming for 240 FPS. If not, then you should get 1440p at 120/144Hz so you get a visual upgrade at least.