The host Channels DVR installed on Mac mini (Late 2012) and the playback is on Mac Pro (Late 2013). The 10+ TVE streams playing back flawlessly.
Nice! Looks like a traders terminal?
I feed Channels DVR from TVHeadend, with a Sat>IP box with 8 tuners, I've had it recording 15 channels - although in theory you could record much more - as TVHeadend will only use 1 tuner per mux, if the channels you want to record are on the same mux it only uses 1 tuner
Using an old Gigabyte Brix i7: