Gaming Notebooks

I have just bought a HP Omen 17-cb1003 with a 2080 Super RTX card (and 10750H CPU).

When I check temperatures in benchmarks and games, the GPU seems to run very hot vs. what I've seen people discuss in other forums.  It gets up to 83-85C, and then appears to thermal throttle.  The CPU seems to run relatively cool (usually staying in the 70s but sometimes getting into the 80s, and it doesn't seem to be throttling under load).  Idle temperatures for the CPU and GPU are high 30's / low 40's.  It doesn't seem to matter whether I run in default or performance, and either auto fans or max fans - the GPU temp gets up to the 80s after a few minutes under load.

From using hwinfo, it seems that my system can handle up to about 100w to the GPU before it starts to heat up to those levels, which is a long way short of the 150w rated power limit.  When I've watched youtube videos of people reviewing this laptop, they seem to run at at 150w on the GPU with temps in the 70s for both the GPU and CPU (e.g. Bob of all trade's channel).

I am wondering if there might be a problem with the thermal paste on the GPU, but wanted to check what kind of temperatures other people are seeing and/or what I should expect to see.

Mods - I originally posted this in the notebook hardware forum, not realising that there is a dedicated gaming notebook forum.  I will ask for that post to be deleted from that forum.