I'm sorry to hear that the TiVo® has been running slower than normal. I will be happy to have a look at this for you.
I have connected to your box and the only issue I could see was an issue with the downstream power level. Network wise all looks great as there is no high demand affecting the network you're connected to. As you'd mentioned that it can take some time for a recording to play I looked at the hard drive status also and all looks great there as well.
I will be happy to arrange for an engineer to call round and take care of the downstream power level issue that's been detected. I will pop the details in a private message, look for the purple envelope icon above.
Tech fan? Have you read our Digital life blog yet? Check it out