Chrome creative app

I have a class of 18 students that login to the app on Wednesdays at 10:40 am EST. We've been moving along wonderfully with many of the basic projects. Last week I had them write their own code and then compile, unfortunately most of the compiling never finished it just kept saying busy. I had only 3 students that actually finished compiling.

I hope that is not going to happen every time during class.