Welcome to the forum, @halloweenkid9 .
Are you playing with the latest Steam version? They fixed lots of crashes there.
If you’re having a crash:
Try playing with the 32bit version and see if it helps. And updating your graphic drivers from your manufacturer’s website also should help, if not, lowering your graphic settings inside the game might also help. Here’s a thread on other things that you can try:
If the game is freezing (not crashing) then it might be related to other issues with lua that people have reported. Harvesting large areas of trees, making huge farms or too big/complex building can affect the performance, too (we’re still in Alpha). The devs are fixing little by little all these issues, and the memory leaks they found, and the game is becoming more stable release by release.