You may find it more valuable to use Event Viewer to look for error codes and/or warnings when you play Facebook games.
Likewise, Task Manager, Performance Monitor, and Resource Monitor may help identify some app, process, or service causing the interference with loading and playing.
Open one or the other and watch for a while See what all is going on. Then, leaving the window open and to one side or the other, load and play Facebook games. Could be some bug in the games causing some resource to be overloaded or not released when it should be.
No need to immediately react and try some fix or change. Look for a consistent pattern and, even better yet, work to duplicate the problem at will.
Identify the cause first. Then look...