I'm not sure what causes the performance issues, I'm pretty sure it's the caching (from both this plugin and trinity) as I've had less/shorter hanging when running DB as admin. (win7)
I've never had that issue with the diablo profile but I'm also pretty sure it's related to the caching/hanging where the cache ends up being nulled or incorrect.
Cursed chest is strange, the ID of the chests are different, but until you start the non-bounty chest it uses the same ID as the bounty chest. It didn't happen often enough for me to test it fully for a fix.
I'm hoping that someone more proficient in writing profiles can spot a way around this. Maybe I can blacklist the area that it spawns or something, not sure.
Anyone having 'path too long' errors:
That is an OS issue, the directory your DB (or the profile you are accessing) is in exceeds the built in character limit. Move it to a directory closer to root and you should be fine.