An RTX 2080 in non-RTX titles is literally the exact same performance as a GTX 1080 Ti, and I own a 1080 Ti. And I can confirm that currently, right now, Satisfactory is significantly harder on the video card than any other game I normally play, causing higher than normal GPU usage overall. So yes it totally is something with Satisfactory. Possibly they can improve this with time with further optimizations, but as of right now, satisfactory on maximum graphics is abnormally demanding on our systems. So yes, for satisfactory, this is normal in your situation and there is nothing wrong. Trying to push 1440p @ 100 FPS at all times will max out your video card in satisfactory and this is completely normal, right now.