Okay, because of "no real information in start post" there will be many questions incoming...
Starting with:
What PC do you have (detailed: CPU Modell, RAM, Mainboard, Graphics card)?
Which OS (Operating System / detailled version)?
Which version of drivers (for GPU and Chipset of mainboard) do you have installed?
Have you changed the usb port for the mouse?
Which "Energy Saving / Power Profile" do you use in the OS? Have you tried to change it?
In most current browsers there are GPU hardware acceleration options - maybe you can disable them?
And many more from others... good luck!