I wonder if this is an Nvidia thing. It’s been working quite well on my AMD hardware. I played for like 4 hours yesterday and then left the game open for 2 more by accident and it was still stable. I did lower some environment graphics settings to reduce microstutters but otherwise it’s running quite well at 60 fps.

Check ethtool to make sure your link is actually operating at 2.5gbit with full duplex. You may need to make sure the kernel module for that ethernet nic supports 2.5gbit.