playing lag - Synology rt2600 apple tv 4th gen infuse 5 pro 1080p

Synology rt2600 apple tv 4th gen infuse 5 pro 1080p

I had no problem with Synology rt2600 + apple tv 4th gen + infuse 4 + airplay speaker, until now. infuse 4 have been playing most of the files. My ATV with these settings has no problems with Netflix and Disney plus. but recently 1080p (mostly mkv) files have serious lag and freezing issues. I just bought infuse 5 pro because I thought infuse 4 is outdated. but it is the same problem. even with infuse 6 (still not pro yet)

Any suggestions that I can try?

Have you tried using Ethernet between the ATV and the router? Sounds like you may be encountering some WiFi issues. Also you may want to make sure your router gives priority to the ATV for streaming.

Where are you storing your files?