Can you tell if there has been settling? If there has been, (in theory) you can re-level it using the adjustable teleposts which have been fairly normal construction on the Canadian prairies for decades. I don't know how common they are elsewhere. I have a fairly large pipe wrench which I've only used once, for adjusting a "loose" tele-post. I only had to adjust it once.
It isn't easy to tell if there's been settling, but it should be relatively easy, if you have an unfinished basement, using a laser level.
Say you have a beam that runs from one side of the house to the other. You'd check the ends to see if they're level, and then check at various points along the beam. The problem is you don't know how level it was in the first place. About all you can do is assume it was originally level at the ends and the adjustment points and work from there. I assume there'd be more potential for drift if a beam only runs across part of a span, say from a basement wall and ending at a post.
This process might be beyond the skills of the average homeowner and you might need help from an engineer or someone in the construction business.
If you do adjust tele-posts, go very slowly, making only part of a turn every few days, or you could end up with worse cracking, or at least that's what I've been told. And it goes without saying, be sure you're adjusting it in the right direction!
One of our houses had dry wall cracking in the winter. The cracks would close up again come spring. I never figured out what that was about.