QNAP - Timing out

Got a QNAP TS-1269U (Version 4.1.0) NAS that takes my backups.

It times out after about 10 hours, killing my jobs at the time.  The timeout range is really precise at 10hours, +-3 minutes.

Any idea where this can be toggled?

The device uses only one of two available NICs; I could try enabling the second one too, in case it's a NIC thing.

I use Veeam for that backup, and it tells me the job failed because "The specified network name is no longer available...An existing connection was forcibly closed by the remote host."

I've already started rebuilding the backup object into multiple smaller vdisks for more manageable checkpoints.