Anytime Sonar is running with a loaded project and in Windows Task Manager you see BitBridge (or the commercial app called JBridge) running, you have at least 1 32-bit plugin loaded into Sonar.
I made a complete cut over from 32-bit to only 64-bit plugins a few years back, and doing so INSTANTLY cleared up just about all crashes for me in Sonar.
Many 32-bit plugins have 64-bit versions freely available, though more hit or miss with freeware 32-bit plugins than commercially-produced ones, so for any you really cherish, it is well worth a look to see if your favorite 32-bit plugins are indeed available as a 64-bit update/upgrade.
Bob Bone