Its happened once or twice. I dont think it is a Windows problem. It usually happens when your computer is running to many back ground processes. Hit your task manager and see what your CPU usage and hard drive usage are at. If there maxing out at 75% to Hundred you probably need to end some tasks that your not using while playing.
eg. Close down Window apps such as Windows store, calendar, Pictures etc. dont shut down any of the windows stuff as this could make your computer run poorly. Also you should do a defrag and disk clean. These apps are located in your control panel. Clear your browser search history and run your windows firewall for malware. This should speed up your system.