I get stuttering from time to time with my (ASIO) audio card. Strangely, what I found works for me was to go into Audio->Audio Drivers/Settings->Audio Drivers->Clicking OK and exiting that menu,changing absolutely NOTHING. It seems BIAB resets driver at that specific point and everything starts playing Stutter free.

Another simple way to test things is to restart computer and first thing open BIAB, load something and see if it plays ok without using any VSTs. Sometimes secondary programs that might run parallel or even closed before starting BIAB do not release driver properly.

Good luck.