Since the 64 bit update the performance increased a lot when I open multiple tabs and general stability improved. Even before I never had RW freezing or becoming unresponsive. Few tweaks you can do:
- If low on memory stop all other programs to release space and reduce swapping
- Get more memory
- Get SSD. RW is having database as backend and each save or new tab are queries against the DB.
- Increase the RW process priority to High or Real-time in task manager.