How to maximise settings to improve frames per second?

I recently bought a 144hz monitor (Asus VG248QE) and I have a GTX 960 card.

I get ~80 FPS with everything in ultra, and I guess I can get more by lowering these settings; problem is, I don't really know what everything means.

What would be an optimum setting to get more FPS but without sacrificing every game detail?

overwatch

Pictures about "How to maximise settings to improve frames per second?"

Defrag your main hard drive.

Change the power option and adjust for best performance.

Update your graphics driver.

Lower your screen resolution.

Do a disk clean-up.

Close other apps and disable startup items.

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