A connection would occasionally fail, but restarting VVPro on the computer with the failed connection usually worked. On rare occasions the entire setup would fail, but restarting them all quickly solved the problem. My old Lenovo Athlon dual core running Win7 Ultimate was dog slow and temperamental before it finally gave up the ghost with a failed main hard drive.
I ran the current primary Win10 Ryzen7 for about a year as a backup in reserve before I swapped it in as my main WD computer that now feeds the three dependent WD computers, two of which are 'reserve backups'. Over the years I've had enough computers fail for myriad reasons that the only secure backup to my mind is another computer that duplicates the function of the primary computer. It may seem like overkill, but the quick installation of the Ryzen7 in place of the Athlon a couple of weeks ago just took minutes instead of the days that would otherwise have been required. Setting up the backup computers before they're needed may take the same amount of time, but they're off line during setup and my website's down time is then minimal when the backup is called into duty.