Originally Posted by macgiobuin
I have noticed that after using some apps that it is necessary to re-boot the phone. I believe that many apps have not been updated for an ICS Atrix 2 and this is causing issues. You might try uninstalling apps, and re-install them one or two at a time. Run the app and see what happens. If you phone lags after using an app several times in a row, I would contact the developer to see if a fix is available.
I have found that if I wipe my phone, it works just fine until I sign into the play store with my google account. As soon as I do that, the thing turns into a turd. That's without downloading any apps.