Vue Pro does indeed allow you to split renders, unfortunately it doesn't work too well for me - Vue Pro crashes when it starts assembling the picture (me = bad-luck magnet). I'll try doing things your way (adding cows one at a time) and see if it helps. By the way, do your cows ever show up twice in the list? I usually see 'MachineA' and its ip-address '192.168.1.5' as two separate entries in the distributed render dialog.