Really calling out taktik and rest of the team for investigation and help!
I just migrated finally to latest os x el capitan (my specs: core i5 mbpro with 8gb ram and ssd, dual monitor setup via thunderbolt, ni komplete 6 audio interface), installed r 3.1 final x64 and all the necessary plugins (64bit versions).
So i’ve tried to run one my heavy cpu tracks there and here is the deal - previous version of this track was running on os x mavericks and renoise 3.0/3.1rc x32 build with 32bit plugins (@88 khz samplerate), there was a a place in the middle of the track (which contains a lot of automation and sample modulation) where it was very heavy on cpu (around 70-80%) and everything started to lag, that was kinda ok with me. Today i’ve tested this on a new system - i loaded up the track, replaced all necessary plugins with 64bit versions and the result was shocking - when cpu loads above 50% or more the audio starts stuttering and laggin (gui is still pretty fluid no lag here btw). I do not use any kind of bridging, os x AppNap feature is turned off at the system level and per app, no other whistles here, system is crystal clear. I also tried to change my buffer settings from 32ms to max avail 48ms, no luck here too.
As i’ve read from here on site, x64 builds supposed to work better with some benefits than x32. So what i’ve described (audio stutters at 50+% !!! wtf) is not acceptable performance at all!
Also, previously i’ve had issues with FabFilter’s Pro Q2 on 32x builds, when plugin gui is open audio starts to stut n lag, so on a new system i’ve updated the plugin to the latest version and that crap still occurs. Other gui heavy plugins also affects renoise performance alot (which is not happening in Logic Pro X for example or Reaper, even with Pro Q 2!!), so whats happening here renoise team??
Can anyone here in the team explain or help me to solve those issues somehow??? Anyone else have those issues, any solutions??? This is really important and urgent and i dont want to start any rant here (like i did days ago mentioning the strange new filters behaviour), i just want explanations and a proper solution.
UPDATE:
I tried to run the project @ 44khz sample ratio, when cpu hits 54-60% audio starts to stut-n-lag too! =(((
UPDATE 2:
This is completely weird - so i went to the fabfilter forum just to see if anyone there complaining about gui/audio lags with their plugins in different daws (but i have none in logic!) and found an explanation/solution there - their plugins are now all gpu accelerated and sometimes behaviour different in various DAWs, so they propose to turn off gpu acceleration via terminal command (http://www.fabfilter.com/support/faq/18/how-can-i-disable-graphics-acceleration-on-my-computer), so i’ve restarted renoise, loaded the song, looped the most cpu intensive part of the track, turned on the mixer view, the cpu peaked at 60-70% now and the renoise audio and gui started to stutter and lag, BUT then i opened the Pro Q2 plugin gui (so the plugin window now closing some part of the renoise mixer view) and audio stuttering and lag mostly gone and that @ 74+% cpu load!
Really guys, whats happening here with renoise gui/audio handling?
Here is the video>
you can clearly see here the scenario, press play cpu hits 70% audio stutter/gui lag occurs, i open the pro q 2 gui window, the cpu gets more heat but less audio stutter/gui lag.
At the end this post is becoming somehow related to my previous one (https://forum.renoise.com/t/osx-poor-gui-performance-in-combination-with-plugins/45164), but there was not comments by devs at all and FFX’s solution to alternate info.plist file did not worked.
UPDATE 3:
I’ve tried to install 32bit renoise build and see how the stuff going on there - and goddammit it works as it should, it works as on my old osx mavericks setup (as described above).