I've tried everything I can think of over here, but I can't get any version of MS 3.2 to reliably play a concert that plays flawlessly in 3.1.1. What typically happens is that the concert opens just fine and everything works as usual for about 20 minutes or so. After that, I can see that the CPU readings for patches are increasing and there's a lot more spiking and instability. About the time I see spikes that exceed 60% of CPU, I start getting audio clicks and stuttering. Sometimes I see "audio engine overload" messages in the console, but other times I don't. Once the clicking begins, it slowly gets worse until I quit MS and start over.
Looking at the detailed CPU readout, it looks like Kontakt 5 is spiking in 3.2.x and it isn't spiking in 3.1.1. But, I don't know if something else is going on that's causing Kontakt to spike or it's actually the problem. It seems strange that it works so well in 3.1.1, but is struggling so much in 3.2.x. I use a lot of aliases and I wonder if that might have something to do with it. But, I'm also using a lot of other 3rd party plugs, so one of them might be causing trouble. There's no indication in Console or Activity Monitor or MS itself that points to anything in particular. In fact, things look strangely normal in all of the meters with the exception of the spiking. Even doubling the I/O buffer from 128 to 256 just delays the onset of the clicks and I obviously don't want to deal with the extra latency, especially if it doesn't even solve the problem.
Of course, if I just use one of the Apple concerts everything is fine, so it looks like a third party plug in isn't behaving. But, everything IS behaving alright in 3.1.1, so Apple changed something. I was really diligent about avoiding any plug ins or routings that caused trouble when I put the concert together in MS 3.1 and 3.1.1, so it's particularly frustrating that all that work is undone in 3.2.
I've looked around on the internet, but I haven't run across anything that matches my experience. But this is happening on both my new MBP 2015 and the MBP 2011 I use live and is completely reproducible. The live machine is stripped down for performance, so there's virtually nothing on it besides MS and all the supporting plug ins and samples. The MBP 2015 is a general use machine. Both are running OS 10.10.5. Neither one of these machines breaks a sweat while using this concert in 3.1.1 but can't manage more than 25 minutes without clicks and pops in any version of 3.2.
Has anyone else seen this behavior? I'm pretty much out of troubleshooting ideas at this point. Fortunately, I can keep using 3.1.1 and that's fine for now. But, at some point I know I'll want to move forward and so I'd like to figure this out. I have a little break at the moment and so this would be a good time to do any updates and test them before I start doing shows again.
It's just a point update. It was supposed to be easy. What could go wrong???....
