What standard of cable? When I rewired I ran Cat6a everywhere. My longest 10G run is ~70 meters and works just fine. Anytime I had a link issue it was because I did not do the best job in termination on the keystone jack.

To be clear the Cat6a is thicker than Cat6 and harder to work with. It makes termination a bit more tricky.

I use Cat 8.

The cables themselves don't get too hot, but the dongles themselves seem to get really hot. I'm assuming that's a known issue given the size of the heatsinks on them.