Question GTX 1070 underperforming, formatted pc twice, Please help!

Apr 15, 2020
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Hi everyone, I'm super new here.

I have a GTX 1070 MSI gaming X
i7-4790k
16GB corsair vengeance 2400 speed Ram
samsung evo SSD

I use to game at 75FPS now I can hardly hit 40 on the same system with the same settings!!

I switched from my HDMI cable and was using the VGA slot on my MB for a day. I reconnected the HDMI cable to my graphics card and then I started to have terrible, terrible performance through games and bench marks. I use to game at 1080p 75FPS on all games, now in those same games, my average fps is like 30. I formatted the PC twice. I reinstalled the drivers many times, I disabled game DVR.

Forza Horizon 4 benchmark shows me that the FPS and the GPU usage are fluctuations like crazy, the GPU usage seem to not pass 60%

I honestly do not know what else to do. Please help!!!