I have to agree that the more recent versions of Cyanogenmod for this tablet perform poorly. It's not a matter of "cleaning up your system". Simply put, the tablet lags worse than it ever has. The community pushes for the latest version, but it's just not meant for this tablet, especially if the statement about dropping support for Tegra 2 is true. Android 4.1 was the best experience this tablet had to offer. Development probably should have stopped there and made as stable as possible. Google and Samsung (and Apple and any other mobile manufacturer for that matter) don't expect you to keep your device for more than 2 years. This tablet is end of life. It had a good run thanks to pershoot, but continuing to try and keep this tablet up with the latest and greatest may not be the best use of anyone's time. When Angry Birds is lagging, something is very wrong, even on a Tegra 2. I will give the latest nightly one more shot before rolling back to some 4.1 version or another.
Anyone asking for 5 users is just silly too. I find it hard to believe there are a lot of tablets out there with 5 users, and with 5 users who really need their own profiles. Just saying, seems like we fell off the track here somewhere. This tablet was getting some good love a while back, and it was running smooth and it felt like we were all getting the biggest bang for our buck. Now it feels like going back to stock is a good idea. Probably time to buy a Nexus tablet.