I was told by a VM employee that there is a problem where the infrastructure required to support the TiVO apps is loaded into memory whether you use the apps or not. This effectively means there's less space to keep the resources needed for other TiVO processes like viewing My Shows or Viewing Planned recordings in memory so they need to be paged in and out as required.
This guy is usually on the money and if this is true it's shocking. It seems those who were saying TiVO and VM were stuffing the box with too many apps and that this was causing it to be slow may have been right. Why on earth TiVo have allowed other developers to trash their product is beyond me.
Edit: I should point out that this may not be the cause of poor performance on every box...som performance issues may have another cause so still best to get VM's advice as mine's could well be wrong/misleading.
Plus all the "chatter" over the network, sending your viewing habits etc. Which parts of programmes you watched, paused, rewatched etc. Even more so now they don't use smartcards, so your subscription is now constantly being checked over the network. Then there are the silly advert boxes at the top of the screen being downloaded etc. I know in the past, at least, every time the network went down, the menus would speed right up, without the constant 10 second delays every time you do something.
Well, I am glad it's not just me, this must be the biggest crock going. Tivo and Netflix, do you use dial up connections? At times Catch up seems to be in a different time zone and for intelligent learning, learn the bloody fact that I would like a reasonable response when I use the remote!!! Thankfully my LG TV can meet my needs far faster than Tivo can even think about it. May need to relook at my current deal.