Was running media portal 1 on a windows 7 machine - playback of films and recorded TV series just worked. About 2 years ago, I tried updating my machine to windows 10 - but found that my film and TV series files got out of sync the longer they played - so reverted to Windows 7. When media portal 2 was released, I thought I'd try again - upgrading to windows 10 and media portal 2. Mostly it works fine, but some files play stuttering (they are fine for example played on their own on vlc media player.) Virtually all my files are x265 mkv format - most are 720p or 1080p. Restarting MP2 will sometimes fix the issue - but not always. The machine is a low powered (25 watt) amd 5350 quad core 2.05 ghz cpu with onchip radeon graphics and 4GB RAM. But as I say, never a problem under windows 7/MP1 - same files play no problem. Any ideas? Thanks.