I just bought a new monitor a gigabyte G24F and I noticed when I put the refresh rate on 144hz or 165hz(louder when 165hz) I can hear a buzzing from behind it goes louder when I put a full screen grey or black app. It's normal? it's my first 144hz monitor and idk if this can be a problem in the future or what. I tried conecting DP and HDMI both with the same results and when i switch the refresh rate to 60 I can't hear anything.