I'm running 2.3.2.560 IDE and 2.3.2.426 Runtime, so my GMS2 is a little behind due to problems with the latest version.  When running in debug mode with GMLive, it freezes for 1 second, then runs for a second, then freezes, etc, so is virtually unusable.  Would this be because of my version?  I disabled obj_gmlive and removed all references to live_call, but running in debug mode the problem still exists.

1/ Firstly, any idea why this happens?

2/ Is there a way to just disable GMLive so I can run debug, without deleting the whole GMLive folder?

See here - it’s a GameMaker bug caused by combination of “real-time debugging” and Watches.

Thanks, removing the watches seems to work most of the time.  Even setting live_enabled to 0 doesn't help at those times, so will make do.