1. Wouldn't recommend playing ps1 and psx backups on the usb drive/stick
2. Wouldn't recommend installing any game bubbles on the vita/pstv's memory card, since you are using to play game backups from usb stick/drive (all your game bubbles will come from the usb stick you install to) (with the exception of the game you need to launch the psp emulator)
3. Play ps1 and psp .iso/.cso from the playstation emulator (you launch from the game you linked to the config.txt file in the "tai" folder during setup) (games are stored in your vita memory card, you don't need to install bubbles for them)
(not sure how much of that is true, but I haven't had any problems following those steps, plus, I don't use plugins like cheats and joystick patches, so you could still encounter a problem)
Following those steps should help prevent stop database corruption. Scroll back a few pages and you'll be fine with the install guide i pieced together from trial and error, here and there. Following the steps above I couldn't get the database to crash, the mai dump crash problems are simply bugs in the program, it needs some updates.
usb hdd with its own power supply should be fine, I recommend a usb stick, because it consumes less power and you can't be sure what the device is consuming if its a usb hdd. The only think I can be sure of is that, the usb stick uses less power than charging the ps3/ps4 controller from the pstv port.
2. Wouldn't recommend installing any game bubbles on the vita/pstv's memory card, since you are using to play game backups from usb stick/drive (all your game bubbles will come from the usb stick you install to) (with the exception of the game you need to launch the psp emulator)
3. Play ps1 and psp .iso/.cso from the playstation emulator (you launch from the game you linked to the config.txt file in the "tai" folder during setup) (games are stored in your vita memory card, you don't need to install bubbles for them)
(not sure how much of that is true, but I haven't had any problems following those steps, plus, I don't use plugins like cheats and joystick patches, so you could still encounter a problem)
Following those steps should help prevent stop database corruption. Scroll back a few pages and you'll be fine with the install guide i pieced together from trial and error, here and there. Following the steps above I couldn't get the database to crash, the mai dump crash problems are simply bugs in the program, it needs some updates.
usb hdd with its own power supply should be fine, I recommend a usb stick, because it consumes less power and you can't be sure what the device is consuming if its a usb hdd. The only think I can be sure of is that, the usb stick uses less power than charging the ps3/ps4 controller from the pstv port.