I usually leave my PM6 running at all times, with 4 contact sheets open (my different photo archives around 1500 photos max in one folder). I often experience that when I have been working in different programs, browsing or emailing and alt+tab back to PM6 to locate a photo, PM6 hangs and write not responding in the appbar. It lasts typically 20s+/- and sometimes the app interface looks at it is scaled down. I run a pretty strong laptop (win10, 64bit, 48gb, i7-8750H cpu, 4k and nvidia GTX 1050 wtih 4gb) so wonder why this happens. I have shut down often and restarted, cleared the cache but still get this behaviour. Any insights to how I can minimize the hangs would be appreciated.