I recently bought an Acer Nitro 5 with 8 Gb of ram but in my PC properties it tells me 6.9 Gb usable out of 8 Gb, I assume that is because it goes to my Ryzen 7 2700u iGpu vram. The laptop does have a dedicated gpu. Can I disable it to get the 1.1 gb back for when I want to play a game that requires 8 Gb of ram and then enable it back in Device Manager because I have the option but I'm afraid that the screen will go black. So can I disable it and if yes how do I do it?