I had alot of issues with the LSP scheduler on getting it to run reliably during Halloween.
If you are seeing issues with the Scheduler, here's a few things you can try to improve playback in the Scheduler:
1. Always re-boot your machine before starting to build a schedule
2. Always re-build your shows in the scheduler each time you want to run a show
3. Before loading the sequences into the scheduler always remove unused intervals in the sequencer and save
4. Before loading the sequences into the scheduler always optimize the entire sequence in the sequencer and save
5. If you are using alot of transitions and/or Macros in a sequence and that sequence is causing light lag in the scheduler, reduce the amount of frames each transition/macro is using in the sequence
(e.g if it's using 15 frames per second, try it at 10 frames or even 5 frames per second)
6. If you are using alot of transitions and/or Macros in a sequence and that sequence is causing light lag in the scheduler, try removing some of the transitions/macros and replace they with simple fade ons, offs, that will allow the scheduler to catch up to the music
7. Always run the scheduler as an admin
8. If the lights are lagging try increasing the effect generation timing from the default 30mS, to 60mS, or 100mS (it will decrease lag, but at some point it will start dropping commands to the lights and they won't fire on time, or not at all)
9. Try and reduce the number of sequences loaded into the scheduler, the scheduler is sensitive to not only the complexity of the sequence, number of effects used, number of timing marks, length of the sequence, but also the number loaded into the scheduler.
Hope that might help someone