Render thread priority and CPU limit setting

Please add two global options which automatically apply to all render tasks/threads (also "apply fx", "glue", "stem rendering"):

1. Render thread priority (very useful for single core machines) DONE (4.7)
2. Render CPU usage limit in %

For me number 1 would be sufficient. Don't really need the "CPU usage limit". Just mentioned it here because another guy requested it.


Of course these only should apply to the "Offline" render modes.


Thanks!

http://forum.cockos.com/showthread.php?t=17794