my miners slow down when I use more than two with cgminer. Is that a problem I will have with the r1? I always have to have 4 copies of cgminer open to avoid the slow down....
I noticed that my averages were always less than desired when I ran between 4 and 8 U3's on an R1. I found myself rebooting the R1 often to get my hashing back to desired levels. I ended up going back to using a PC to run the U3's since I have had far better averages and I unplug and plug back in the zombie U3's a lot less than I was rebooting the R1.