I have been noticing lately that Construct 3 Android Builder has been very slow in building up my app. My internet connection is fairly good so I am not sure if it is the issue with C3 server because it seems to hang when it is "Connected to Server". The size of my APK is less than 30MB and it is taking more than 30 minutes to reach "Preparing Build" but finally not being able to get the exported files because it hangs. Construct 3 admins may want to take a look at this technical issue.