I upgraded PowerDVD 22 to 23 yesterday, since then PowerDVD no longer play*.mkv files in 4k. Windows11 Pro, all the latest updates and all the latest drivers, as well as the required video codecs are installed. MPC plays them, so it can't be a fault on my system (especially since 4k *mkv files were running with PowerDVD 22). I just did the upgrade, didn't change any settings or anything like that. I actually only performed the upgrade because version 22 sometimes did not display any subtitles of*.mkv files. I would like to ask them to help me as soon as possible, otherwise I won't be able to fully use the program. It would also be nice if they could answer my tickets and not leave me hanging like that as a customer. And again in English: I upgraded from PowerDVD 22 to 23 yesterday, since then PowerDVD no longer plays *.mkv files in 4k. Windows11 Pro, all current updates and all current drivers, as well as the required video codecs are installed. MPC plays them, so it can't be a fault with my system (especially as 4k *mkv files were running with PowerDVD 22). I only did the upgrade, didn't change any settings or anything. I only upgraded because version 22 sometimes did not display subtitles for*.mkv files. I would like to ask you to help me as soon as possible, otherwise I will not be able to use the program fully. It would also be nice if you could reply to my tickets and not leave me hanging as a customer.