acer A700 is slow

Welcome to Android Central! On my TF300, I disabled a lot of apps to make it run a little faster. Try disabling Asus Sync (assuming you don't use it) and Chrome (stick with the stock Browser). I also think Nova Launcher performs a little better than the stock launcher.
 
My A700 seems to run much better with the CyanogenMod ROM installed. Running 10.2 now, and ready to try 10.3.

The CM site has an excellent step by step guide to unlocking the boot loader, routing and installing a ROM, and it's tailored to the a700

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