A 5 minute sequence in Premiere is taking 45 minutes to render the audio...it's a single track of interview recordings and one music track. Could. Not. Be. Simpler.
• I'm not using multi-cam clips, only nested sequences to synchronise a single audio track to a single video.
• I tried matching the audio file sampling (96khz), and it seemed faster...till after 20 seconds it ground to a halt again.
Incidentally, the audio rendering process is NOT multithreaded. At all. I have 24 cores. Only 1 is being used. Unbelievably awful performance.