Found a really huge problem:
If you jump to the next photo in preview using your keyboard arrow keys, it takes some time to react, in Version 5 this was instant. I find this crucial, there must be no delay between keyboard presses and selection changes, or otherwise your workflow gets disrupted.
Just try to hit left/right/left/right very fast in PM5 and it keeps up perfectly all the time. In PM6 you can do that and watch the preview catch up for a few seconds after you stop pressing any buttons.
Didn't expect such a massive performance drop in PM6 – I hope this bug gets fixed soon, the desctiption said it was supposed to be faster than PM5, not way slower?
By the way – the ENTIRE INTERFACE seems to be very laggy. Every single button press takes a little time before it actually reacts or a dialog box actually appears. Was PM6 not natively developed for the mac and uses a slow emulator or anything? The glitch from the screenshot suggests so.
Thanks,
Matthias