I will have a look at the cpu and ram load while keeping channels busy.
I have been using dvblink for many years with different service providers, some 8-10 years ago I had iptv direct from my provider and with dvblink I had 8 virtual tuners available. At that time I could record 8 streams simultaneously and actually I am still using the same NAS as then. Only difference is that back then it was through ISCSI and now it is SMB but I don’t think that makes much of a difference
Recording to a network mount is not recommended
What is your recommendation local SSD or ???
Local HDD over USB3