Slow dvr response to remote - DirecTV

Why does my DVR respond so slowly to remote control commands (channel changes & fast forward/backward and guide movement) usually only between 6:00 pm and 9:00 pm every day? (not weak remote batteries) Could it be busy prime time overloads the satellites?

This question, "Slow dvr response to remote," is about DirecTV channels, programming, equipment, and sports.