Drop in VRAM CLK - from 9001mhz to 405mhz

[Microsoft Windows]

Good afternoon,So I've been encountering a series of (probably connected) issues with my Dell XPS 9730 laptop. Specs are the foot of this message.Apologies for the long description, I want to be sure the complete device update history is included, in terms of changes from before the problem first occurred and any progressive changes, which may help someone much more knowledgeable than me to identify the root cause of the user experience - frame "stutter" during gaming (from 60fps to 1fps).What is the ultimate root cause, which maybe creating a chain reaction from the root cause to the user exp

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