Toon Boom Stuido keeps crashing

I have Toon Boom Studio 8.1 and operate on Windows 10. I’ve experienced the program crashing time to time, but now it seems to be very unstable. Like I will just press “r” to add a frame and the program will stop responding. Is there any way to fix this, or know what is causing the problem? I am working on a pretty big project with many layers, but even so, why would this problem be relatively new?

I thought it may have to do with limited memory, so I cleaned up memory by ending unneeded applications through the task manager (anything but TBS) but this didn’t even help.