So after 5 years i finally realized I've never used the non igpu fully, so i decided to give it a go, now the problem is i read online that the igpu is a way for the NVIDIA card to be able to interact with the screen hence why i cant change brightness or open NVIDIA control panel after i disable igpu in device manager. the problem comes when after some searching , no one was able to even have their screen on, but mine does turn on and works but games seriously bug (lower fps than if i use an external monitor with only NVIDIA GPU, and doesn't even match the fps that it monitors to what i see). Now my external monitor is a trash projector hence why i don't want to use it, but the problem is this, every time i launch a demanding game specifically for NVIDIA optimus to work, msi afterburner still shows only about 40% of my NVIDIA card working, and about 100% of igpu, and most importantly it is nowhere near the same results as if i was to turn of my igpu completely and run on external monitor. so what can i do? i get the optimus is supposed to make my NVIDIA kick in and igpu is only on to transfer the info onto my screen but its clearly stopping my NVIDIA card from operating ANYWHERE near the best it can when igpu is off and i use external monitor. for reference, when only igpu is enabled, heaven benchmark is ( fps - 9.5, score - 239, min fps - 6.3, max fps - 20.4) as for when only NVIDIA GPU is enabled, heaven benchmark is (fps - 52.8, score - 1331, min fps - 13.1, max fps - 91.2). also a game i play which inst high demand called ddnet (a client of tee worlds) has massive results. Only igpu enabled, fps 150+. Both gpu's enabled and 3d settings are set to auto select but rest of settings are set to max performance,fps 400+. both cards enabled but 3d settings are set to NVIDIA, windows powers consumption is set on high power (NVIDIA gpu), fps 250+. igpu disabled and using laptop screen, fps 7-19 +-. igpu disabled and using external screen, fps 1300+. clearly NVIDIA is capable of so much but when i use the "NVIDIA optimus" technology, it makes the dgpu pointless, and yet only way to use NVIDIA is by connecting even the same laptop screen but thru the HDMI port and not the cable port on the motherboard.