I have a GTV with all the latest updates (as of 2021/02/14) that will seldom record a show to completion. This happens for both "live show" recordings (i.e. push the RECORD button) and from scheduled recording.
I have tried both a (1) 32GB Kingston Datatraveler USB3 stick, and a (2) 4TB WD My Passport USB3 HD.
I cannot see any specific similarities between the failed recordings -- in other words it seems random. What recordings there are are fine up to the point of failure.
Both devices check out fine on a WIN 10 Pro system. Both devices are formatted on the WIN 10 system as NTFS.
Anyone else having these issues?