Crashing while actively scanning
I've noticed that when I try to spider websites of a large nature (thousands of requests, multiple forms, 1,000,000,000 + bytes) burp suite will crash and then no longer reopen with restarting my machine. I am currently running kali linux 2019 from a live usb when it crashes, on my mac.
Which version of Burp are you using?
Do you have performance feedback enabled (User options > Misc > Performance feedback)? If so, could you provide us with your diagnostics (Help > Diagnostics)?