Based on those results it looks like the WinMTR test also disconnected while you were playing. And so that generally indicates that the computer lost connection altogether. This could indicate a potential issue with the router. Are you on a wired connection? If not I would start by moving to one to test.
The info here may also help.
If you have the option, we can also try testing with a different network altogether. If you have a phone and data plan that supports it, we can accomplish this by setting up a USB tether or mobile hotspot to connect through. In doing so, we’ll be able to bypass the router\modem as well as the routing provided by your usual service provider.
If this works, we’d also like to get the make/models of your modems/routers. The details will usually be on a sticker on the network device, or stamped onto the hardware itself. Can you reply back with that information as well?