Fun game but it starts to lag pretty quickly, even on PC. I was enjoying it but now it is unplayable, also happens on Android.
Here is a video of less then two minutes of game play after a reboot:
It does get pretty laggy at endgame. My best advice is to keep Processing Power buildings low, this way you will never have lag.
Is there a way to turn off auto upgrades on processing power?
As of now, no. I will find a workaround for the lag issue and upload it soon.