I have found the same as dragon-it, a factory reset greatly improved the EPG lag for some hours but after another re-boot which auto loaded the backed up recording schedule and favourites some, (but not all) of the lag was back. I'm wondering if the backed up recording schedule / favourites is incompatible in some way with the 1.03.06 EPG and re-loading it re-introduces some of the lag, the only way to prove this would be by manually entering the schedule / favourites and not allowing the back-up to be used, I haven't yet tried this due to the large amount of data I would need to re-enter. I was also wondering if temporarily reducing the epgrange from 8 days to say 4 might reduce lag, indicating, perhaps that 1.03.06 works better with more memory