You know, there are lots of fixes for any problems this device had at one time, but many require rooting and installing custom roms/kernels/recoveries and certain non-stock apps. I realize that some people like staying stock as much as possible...I don't. I want to get root immediately and start customizing. That's just me. Some people don't like to eat meat...I do. Some people can't imagine not driving everywhere...I've never owned a car. We're all different. But sometimes you just have to understand that your desire to stay all stock comes at a price. Lag exists. That's why custom roms exist...to eliminate lag, among other brilliant things.
Transformer Infinity 32Gb - JB 4.1.1
ROM: CROMI v4.4 with _that kernel
Nexus 7 32Gb - JB 4.2.2
ROM: between sparksco's sabremod and sbdags' CROMi with M-kernel
SGS2 Epic 4G Touch - JB 4.2.2
ROM: Evervolv, Baked or Magical Unicorn
Xoom WiFi - JB 4.2.1
ROM: EOS 4 Wingray Nightly 180
Rockin' TWRP Touch Recovery
--helps you, give them a THANKS!