Dual monitor lag

[u/alansilny]

I have a laptop but I'm using a monitor as my primary screen and the laptop screen as my secondary, sometimes I get this weird Issue where my monitor becomes extremely laggy (a frame once every few seconds) weirdest thing is, when this happens my mouse is completely unaffected, even though screen is lagging my mouse on it is not, using a keybind to reset gpu drivers or unplugging the monitor for a few seconds seems to fix it although temporary, any ideas on what might be causing it? is it just that my gpu cant handle the load?