Hi@michalrudnicki, Welcome to the HP Support Community!
Request you to follow the below troubleshooting steps:-
Download the GEFORCE EXPERIENCE link
All I can offer is a couple of things.
Open the NVIDIA control panel like the links you gave instructed. Make sure Optimus (switchable graphics) is disabled.
Follow the example below to disable it...
Under Manage 3D settings, select the Global Settings tab. Under Preferred Graphics Processor, there should be a drop down for the NVIDIA card. Select that.

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