I have brand new roamio basic. It replaced a premier and was installed in same place, same connections, same cable card. Occasionally I have bad pixellation on all channels but after awhile it stops and can be fine for hours another time. Then it comes back for awhile. Did not have this problem with premiere. The fact that I don't have it all the time has me puzzled. Also I don't see people posting pixellation problems anymore except the Verizon thread and I have Comcast. Do I have a bad roamio that I should return or is there a fix?