Stuttering during games?

Has anyone experienced occasional stuttering when playing games on their OP3? The game would run perfectly fine, then freezes for a second before resuming. I'm on stock 3.2.1 and rooted, but no system mods other than adaway.

Animation stuttering in the recents page?

Any of you guys experiencing this? Maybe I'm just crazy, but it's driving me nuts every time I select and exit recents where the stuttering appears.