...I tried loading one of my existing songs and it loaded fine but took a long time to generate...
J3, approximately how long? Just trying to get a handle. Was this seconds, minutes?
I just tried it again and it took 3:56 to generate a song with 69 bars, 1 chorus, 5 tracks. Same song inside BIAB will render 6 WAV files in 0:30!!!
The VST is 8 times slower than rendering it inside BIAB!