Game keeps crashing and not letting me reconnect.

Whenver I start up a game in any game mode I play through it and I end up crashing, i've upgraded my internet because I've had issues with connecting before but I would usually end up connecting losing like 2 mins of the game, but whenever I crash Im not able to reconnect until way later. Im sure it isnt my computer because I can run a lot of other games, just whenver I start to play I end up crashing and I lp from a game I won because I went afk for to long trying to reconnect. Any help will be great, because I've had to many games that this happened to me already.