System crashes

Hey you guys I am very new to this producing and this software, I am having the most trouble even after watching all the cubase videos I can I’m still not having any luck. Every since today I am having trouble expanding my beat time, every time I expanding it stops at 3 and shows a loading sign and get stuck so I have to constantly shut it down and reload it can someone please help me is it a software issue? should I uninstall and reinstall?