Play show while recording stopping for buffering

I noticed that if I’m watching a show that is currently being recorded, sometimes the playback stops, apparently for buffering.
I was wondering if the buffering on the ATV4 for a recorded show (being recorded or not) is too small or it is supposed to buffer as much as the 90 min limit used by the live playback ?

tks

Maybe its your hardware / network connections. No issues here.

Well … I might have reached the limit of using a Powerline to connect my MacMini to the router then.
I’ll try playing with some QoS and see if I can make it work better.

tks