How to disable Accurate Play Solo?

My studio for a particular game has been freezing whenever I try to playtest. It's just for that game; other games work just fine when I click "Play Here." This has just started happening today.

According to several devforum threads, the answer is to disable Accurate Play Solo. The problem is that I can't seem to find it anywhere in my settings. How do I disable it, and if it is no longer possible to disable it, is there another way to solve the problem?

I figured it out. One of my recently added pieces of code was somehow interfering with my game, so reverting it fixed the issue. I still have yet to figure out why it was causing such a ruckus, though.