Frustrating problem! I edit the video of my church’s sermons every Sunday to be posted on Youtube. In the process, I usually export the audio to WAV for external processing before importing it back into Shotcut. Normally, a ~30-35 minute recording exports to WAV in just a couple minutes, but sometimes, like today, it takes over an hour. I’m using the same settings: Presets > audio > WAV, then Export. No filters.
Shotcut version 23.09.29; Intel quad-core Core i7 (10th Gen.) PC, 16GB RAM, 1TB SSD with about 25% free space.
Any ideas about how to fix this would be appreciated!