You can clear out the logs on the Tivo to improve its speed and performance by going to home, help and setting, clear or reset tivo and selecting clear thumb ratings and suggestions. It will then ask you for your 4 digit pin and to enter thumbs down 3 times followed by the last channel button. This should inturn improve the overall performance of the box. Hope this helps
Nickboyyy1 is absolutely right, clearing ratings and suggestions will help speed up the box. As well as this, you can clear unnecessary background data on the box too.
To do this, just go to the Home screen and on the remote control press Thumbs Down, Thumbs Up, Play, Play. you'll hear a 'ping' noise and the screen will go blank for a few seconds. once the screen comes back, you should notice the box speed up.
All the best!
Tech fan? Have you read our Digital life blog yet? Check it out