hey guys

i had motu and rme connected thru vst system link with adat optical all of sudden
the optical port is not detecting in 828 so now i cant link the both
is there any other option to sync two systems as i want to use the 1 system for sequncing and
2 system for video

is there any best and reliable sync option for video to cubase ??
i cant afford to buy another rme just for sync
and with MTC the sync is working but its not stable as vst system link.