My Fps is lower than it should be

Hi everyone!
Recently in Overwatch I’ve had a very large fps drop than usual, here’s what happened.
About 6-7 weeks ago I unplugged my computer’s Hdmi and power cable so that I could focus on school for the end of the year. About 2 weeks ago I plugged it back in and it has had a Very large drop in frames and graphic quality. my computer could run about 100 frames in game but since I’ve plugged it back in it has run at about 40-50 frames with much worse graphics.
I have tried many things like having the settings on Low, closing background software, Setting it ‘high priority’ in the task manager, Uninstalling and reinstalling the game, and everything else in Blizzard’s support article ‘Troubleshooting Overwatch Performance’

TL;DR My frames have dropped and I’ve tried everything, Please help!

Thank You!

These standard tips can help resolve most Overwatch FPS drops:

Also here are advanced tips I have written in Overwatch’s Tech Support forum that maximize your FPS performance in the game.