Ardour always felt pretty smooth and fluid on my machine. This is no longer the case after upgrading to macOS 11 Big Sur and Ardour 6.5. There’s now a noticeable lag which is most obvious in e.g. the clocks in the transport sections or in plugin meters that now update significantly slower. But it can be felt across pretty much the entire interface that Ardour is basically less responsive.
Ardour does not indicate a higher DSP load than before. I noticed that with a fresh session, only one stereo track added and just playing back a region without any plugins, Ardour’s CPU usage is at about 86 percent. This seems pretty high to me, but I don’t know because I never had a reason to measure Ardour’s CPU usage before.
I upgraded to macOS 11 first and then to Ardour 6.5 but hadn’t used Ardour in between, so I can’t say for sure whether it’s the OS update or the application update (or a combination of both) after which the issue occurred.
I already tried uninstalling and re-installing Ardour, but with no luck. Any help would be greatly appreciated.