I’m running infuse on my Apple TV 4K with a SMB share on my Synology NAS hooked up via ethernet.
Whenever I play a video file, there is a half second delay anytime I press play or pause or seek forwards or backwards. The use case I see every time with every video file is I’m watching the clip (it starts and loads just fine) and then I click the apple siri remote to seek forward 10 secs, infuse has a lag/delay and then the video starts playing again (sound will lag even more before). Plex doesn’t do this so I think my setup is fine.
The files are simple 720p .mkv video files. I also re-encoded one of them to .mp4 which plex showed it was playing as a Direct Stream (so no conversion necessary) and that one even lagged.
I can include a video clip showing this behavior if you want.