USB-C can easily deliver 100w continuously if the charger and laptop supports it.
But who knows with the new GPUs... Maybe should be a bit more headroom?
Mobile GPU max power (using Geforce examples)
80W GTX 1660 Ti (mainstream/high end before Geforce RTX took off)
115W RTX 2060 (if OEM tunes it that high)
140W RTX 3070
175W RTX 3080 Ti
Also sadly there are multiple reports about this issue with microsoft products too. That and coil whine...
If I could connect my SB1 directly to my monitor I totally would :/