Close to giving up on DT

This constant crashing is intolerable.

This is unfortunate. Constant crashing is neither common, nor tolerable. If you haven’t already, I suggest you open a ticket directly with Support (here or here or support_at_devontechnologies_dot_com), where you can get better, and faster, personalized attention than the forum. Please save relevant console messages, and DEVONthink crash logs, and forward them to Support.