General :: Phone Constantly Soft Resets?

I've got an HTC Evo 3D running MIUI 2.1.20. I've been having an issue lately that's spanned multiple roms on multiple phones. Every few minutes the phone will freeze a and eventually soft reset. This only occurs when the phone is sitting, or I am on the home screen. If I'm using an app on the phone it runs fine until I exit that app, at which point it will continue to run for a minute or two before soft resetting.

I've experienced this issue on both my Evo 3D and Evo shift. I've used Eternity and MIUI on the 3D, and MIUI and Synergy in the shift.