Hi Mark, I guess maybe there're several apps which have the same kind of problem here. I don't have "The Time" app, however, one of my apps called "RenRen", which is often used by Chinese users, makes the runtime broker in my Windows 8 increase from 1M to 1G within half a day.
I'm not an expert, so I just make such guess that there may be some kind of issue when Windows 8 manages some apps in a certain way, and it may cause RAM to increase significantly.
Hopefully, seems that most apps are all-right. XD