Tivo Desktop problem with Comcast compressed

Hi, Comcast has started compressing most HD channels in my area. Is causing a strange problem with Tivo Desktop (2.8.3). I have desktop checked off to download fastest way possible as I was told you have to do. The compressed programs download to the computer with no apparent problems. I can watch them on the computer (after installing some codecs). However I cannot transfer them back to my Tivos (both Roamios). They show up and START to transfer but they just stop 1/4 to 1/2 way through. Blue light on Tivo stays on but transfer just stops. I can watch what has transferred but cannot get any of the compressed shows to fully transfer back to the Roamios. Any help with this? I've trying downloading then uploading from a couple different computers, same result. I mainly like to save shows on my computer just for the purpose of uploading them back to the Tivos in the future so this is a big problem. And there is a problem trying to PERMANENTLY delete the partial uploads from the deleted items folder, just kind of flashes and goes back to the same screen, partial show is still there in the deleted items folder.

Oh, when when I started downloading these compressed shows to computer they would not play on the computer, audio but no picture. I installed Windows 7 Codec Pack from http://ift.tt/17iJdsq. They play now however when I downloaded the codec pack Norton kept deleting it saying it was "unsafe". Is there an issue with this codec pack/website?