PSA regarding this issue, I found this post Feb 24th that fixed my issue with very slow seek times (rewind or forward) which for me were exactly 15 seconds and forced me to use plex until this was resolved.
Only other issue I have been having (minor compared to above) is when done viewing media and press back to go to Home Screen of infuse I get “blank” screen for about 5-10 seconds. again not major. Might be time for me to upgrade ATV Gen2