3D2AG's Red Pitaya is having problems, and since the issue seems to be correlated with varying RP fan speeds, I think his power supply or RP cable is having problems.  The symptom is that SkimSrv starts OK, works for less than 30 seconds, then "Too many receivers" and network traffic drops to zero.  We've tried various combinations of CAT6 Ethernet cabling via Ethernet Switch and via Router with no success.  It used to work fine with no issues.