Greetings, Tiger!
Is your issue still relevant? If it is, please try closing all not used applications and tabs in your browser before launching the game. Please also check your PC's RAM and make sure your Internet connection is stable. Please note that this situation might occur if you have a 32-bit version of the Windows operating system.
Also you can find more recommendations for loading the game by following the link below:
If the issue is still relevant after performing all specified steps, please let us know.