Why does running my build in fullscreen produce framerate lag?

Hey guys, so I’m chugging along with the game I’m making and on the few builds I’ve pushed out I’ve noticed a strange peculiarity in that when the game runs in fullscreen, the build has an inconsistent framerate. Change the settings to be windowed however, and the game runs buttery smooth.

Any insight into this issue, or tips to fix the problem?

Let me know if I can provide more info.

Try changing the resolution in project setting then build it again