Same here - I can play ~45 min before a crash. Doesn't matter what I'm doing - I have a big base, but it crashes if I'm in the base, out of the base, clear other side of the map (with no player-made structures rendered), etc. It's made it damn near impossible to do drops or veins solo - have to have a buddy, as each will likely crash at least once. It's ridiculous.
Maybe since it's been added to Game Pass they'll finally do some work to optimize.