The brute force method to uninstall drivers from where Windows stores them can be done with a little tool called DriverStore Explorer. Download it, run as administrator and remove the Intel Display Adapter driver. You may also see the Royal BNA one kept as well, remove everything regarding Intel at the Display Adapter category. Nothing else! Then make sure that DDU told you that automatic driver installation is disabled and try again.

Zitat von lordkag im Beitrag #17

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While modding .inf is a solution, the upper limit of usable RAM for video card is set in BIOS. That's the first place to go.

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Was the dedicated vRAM raised as expected?

Good, you will now probably have a better experience. I remember that at my older 4-series card it helped with YouTube video playback a lot. But make sure you don't enable "Hardware Acceleration" at the browser as this card's implementation is not working properly at all causing stuttering. Software is the only way to go, this gpu never had hardware acceleration so the newer modded drivers do show it's compatible but you will only run into problems. Just sharing some of my personal experience with that card.