amoureux

I'm cool with switching to duel channel memory but i'm wondering does it really causes huge performance difference / laggy mouse movement?

Recently i just built a new PC and i have some issues with the laggy/draggy movement of the mouse. Here's my specification, mpg-z390-gaming-edge-ac i7-9700k RTX 2080 1x 16GB 2666 Klevv Ram Windows 10 64-bit OS, Version 1809, OS build 17763.503 Whenever i alt-tab between game or some other programs like Google Chrome , Dota 2, or Whatsapp/Telegram my mouse movement would randomly become very draggy and laggy. Sometimes it happens, sometimes it doesn't. But whenever it happens, oOnly after a while, then the mouse movement becomes smooth again. I have tried to find solutions to this issues but i can't seems to find any. I don't have such problems with my older PC whom specs is way lower than the one i'm currently having. Any assistance would be appreciated. Thanks in advance. P.S: I have heard a lot about dual-channel ram and single channel ram which may be the cause of my issue? Since, i only have 1x 16GB, it probably means i'm on single channel. Do you think by getting 2x 8GB ram will solve the issue? As you can see from the benchmark image above, it isn't as high (green range) as i thought it is suppose to be which may be the reason why i'm having such issue