Emergency! What is funspeed and can I delete it?

Please help, it's an emergency.

I need to go on a 10hour flight with a laptop full of other important files tomorrow but now my laptop(Alienware 15, win 10) is full, I found out the biggest file in the C drive is over 104G, which is the Funspeed file as the title suggested, please tell me what it's for and if I can delete it or not.