Creating or recreating thousands of stems takes hours of right clicking on every track (well plus days of processing). Traktor Pro 4 is a great step foreword, and now is the time to add that stem generation option to the right click menu. This must be easy to implement. We would also like a few added lines of code to stem separate more than two(?) tracks at once for way more speed. Currently stem generation uses 2, maybe 3 or so cores and makes the playback stutter, with 30% or so total CPU utilization. Maybe a setting under "Multi-core Processing" of how many threads to create for parallell track analysis, stems and so on. If that's to much, you could comfortably assume most people have at least 8 cores, as creating a few more threads than there are physical cores makes no practical difference since there will be enough logical cores to carry them anyway.
Thanks in advance!