I just had the MRV upgrade & now have DECA & no other networking -- it is not connected to my home network. I find the DECA speed to still be lacking when playing from another DVR. Fast forward lags & then jumps just like it did when I had an ethernet cable connected between the two DVR's. Everything works fine if watching a show on the recorded DVR. I don't know why I have this speed issue when others don't seem to.