If you are still using your old database in the
HUD Options then it will still be being used. Once you've done full housekeeping on it it should perform OK, though, and you won't need to rebuild the cache on it again unless you add custom stats.
There are some further performance improvements in Beta 30.1 (over Build 5.2) but there were a lot of big changes for this version and there are some issues too so you may want to wait for the next stable update.
PT3 Build History / Release NotesActually, Beta 29.1 is stable and has most of the performance improvements, so try that.
Beta 29.1 upgrade installerIf you're still having trouble after that please
report your problem.