I had to do this for my uhd 620 too. You can’t play videos because the player defaults to integrated uhd card for acceleration, even if you have nvidia card running. You could try in the settings of the player or in the nvidia settings to use acceleration of nvidia globally or only for the player you use.
As for the thunderbolt is that USB-C connector? I also have an USB-C that I couldn’t make it work on my laptop. It belongs to the UCM UCSI device class that only exists in Win10, so it can’twork on 7. Can you give me the device id for your thunderbolt from device manager?
I tried extracting the drivers from windows 11 on the UCM UCSI but only ended up with an error code most likely if someone is good at it they might be able to back port them like the other USB driver
The error code i get is
UCM-USCI ACPI device
Code 28
The install Class is not present or invalid
with the UHD 630 driver I got it working with a modded “signed driver” this worked on my 8950HK chip
I have the same Device ID, I tried to make it work, but never succeded. I don’t think the device class can be ported, so unfortunately this will probably never work on Win7.