Sad to say I am still having the guide load slowly and occasionally slow channel changes or going back to a channel after exiting a recording using Ethernet. However - other problems do not seem to be occuring - namely non-responsive remote.
dravenstone - like you said, I also was having recordings delayed by a minute or two - this has not occurred since going to Ethernet. Interestingly - it also has not been happening on my HR23/700's which still are connected via DECA suggesting like you previously said that the HR24 is blasting the DECA network with bad packets or something - causing all of the DVRs on the DECA network to have problems.
I may try switching more HR23/700's onto Ethernet to see if that helps (I can unfortunately only do that with 2 of my 3 HR23's).
That's a bummer. I, unfortunately, can report that things are still not perfect, but they are MUCH MUCH better. After about 24 hours of solid performance I now get occasional delays in bringing up guide or executing commands. The one big thing I've noticed same as you though is that even when locked up at least the remote commands register on the box so I know it's not as completely down and out as it was before. And thus far, recordings haven't been impacted. I'm afraid this isn't a 100% fix, but it's loads better than previously. LMK if moving everything to ethernet helps, I can easily take my other two boxes off of DECA if that helps.