Missing Text

A year ago I upgraded from a HD DVR receiver that was several years old to the latest Genie 2 receiver package.  When that happened I noticed to problems:

1. The response time of the Genie 2 was about half of what it was on the old receiver.  There is noticeable lag time / latency in all operations.

2. When going to "List" there is often missing text.  Have to Exit and List again until all text shows up.

I have been waiting a year for a firmware update to fix these problems, but none has occurred.

Is there any way to resolve/fix these two issues?  Have these been reported to DirecTV, and if not how can one do so?