Stefan Mileschin

Other than reports that the Android 4.3 update has improved performance on the Nexus 7, Google seems to have addressed the performance degradation issue as well. "It appears that Google has fixed the performance degradation problem with the Nexus 7 by finally adding TRIM support in Android 4.3 (which also applies to all devices that have been upgraded, though I never had any performance issues with my Nexus 4), as noticed by Brian Klug at Anandtech. This means, in theory, that performance on the device should remain usable, even as time goes on and I continue to use my tablet to do all of the things it was designed for. I'll be watching it closely (and probably be very vocal about it if performance drops off a cliff as it did before), but I actually have a usable tablet once again, and I didn't have to shell out upwards of $200 again to get there." My Nexus 7 feels like new now that I've wiped my custom ROM and installed stock 4.3. I'm skeptical about whether or not Google has managed to solve the performance loss over time though, since it seems to be caused by low-quality NAND, and not by software.

http://osnews.com/story/27229/Did_An...ve_my_Nexus_7_