Using the @kano version of cgminer with about 18 of the compac-f units I'm seeing 100% CPU usage on windows server 2016 on AMD Ryzen 2700 CPU.  Can't even get full speed out of them (struggling at 200).   I never had a problem like this with the new pac units.   Anyone else seeing this high CPU usage?  Any work arounds? 

Would 18 of these (properly powered) run on a pi based rig or would that not have enough CPU?

Thanks