Laggy viewport on empty scene

Hi there!
Just wanna tried doing something with awesome grease pencil, but I noticed that the whole scene lagging also just with one cube for example on scene.
I’m work on laptop Lenovo, iCore7 8gen, 16Ram, AMD Rx 4Gb, SSD. Not very old model, but that’s little things really frustrating me.

I also noticed that the battery icon in the tray starts blinking when I just start to rotate the scene, if I stop moving around the empty scene, then the blinking also ends.