Game keeps crashing

For the past couple of days my overwatch kept crashing saying “Your rendering device has been lost! Application closing!” This is so frustrating because i keep getting penalties in comp so my sr is getting very low. Is there any way I can fix this crash? It seems that this is happening to a lot of people as well.

There is a sticky thread about this issue with the error message as the title. "Your Rendering Device Has Been Lost"