Until recently the playback of ts and m2ts files in MC was not very good. Lots of tearing, etc. In recent versions it appears that they play much better. I did however notice a few oddities.
1) Once I seek forward during the playback of a ts file I can no longer go back earlir than the current seek point. For example if I seek from 12:00 to 14:45 I can no longer go back earlier than 14:45. It seems as if the bookmark is getting set and not allowing me to seek any earlier. I tried to change thefile to 'Use Bookmark' = No but that doesn' help. If I absolutely need to go earlier I have to stop playback, clear the bookmark and start playback from the beginning again.
2) The 30 second skip actually skips 32 seconds. It doesn't sound like much but when watching recorded TV shows and attempting to skip commercials skipping a few commercials can add up to about 15 or 20 seconds of missed time. Because of issue #1 above I can't even back up a few seconds.