At some point after TVAI v6.x, and up to and including v1.3.1, the app’s low power mode has stopped working on Mac. I wondered at first if this was due to a recent change in MacOS, but that hypothesis was eliminated by running TVAI v6, where low power mode still works as intended on Tahoe 26.4.1.
Now, the only way to get the equivalent effect i.e. moving the processing to the Neural Engine (ANE) where possible, is the cumbersome process of switching on the MacOS Low Power mode prior to starting the rendering and then to switch it off again after the rendering has started. The processing then remains on the ANE, as expected, after switching to full power mode.
When checking the log file, I see that the Low Power mode switch “instances=0” is being passed to FFmpeg in v1.3.1. Running from the CLI also exhibits the same issue. This implies the bug is in the Topaz FFmpeg. Or perhaps that change was intentional and the UI hasn’t been updated? Either way, there’s a bug.
In exactly which version this started, I don’t know.
Andy
