in previous versions the “make stereo track” function was practically instantaneous even on very slow computers, but now in the newest version it’s “mixing” and “rendering” which takes time the longer the tracks are. Am I doing something wrong or has it really changed in the newer versions?
It has really changed.
There is some discussion regarding this change in these links
- "Make Stereo Track" does not do what it says in the manual. · Issue #6007 · audacity/audacity · GitHub
- When merging two copies of a mono track into a stereo track, all mono clips get rendered into a single stereo clip · Issue #7072 · audacity/audacity · GitHub
- Make Stereo Track now slow: mixes and renders now, prev. would instantly join
- Make Stereo Track now slow: mixes and renders now, prev. would instantly join (followup)
- Split Stereo To Amplify One Channel - #2 by steve
- Enhance "Make Stereo Track" for special well-aligned cases, losing less information · Issue #5203 · audacity/audacity · GitHub