When I start the game on the different bo1 zombie maps the fps become slow I have to press pause and wait 5 minutes then I can play the game normally this does not happen to me in bo2, any idea what is happening?

alex11_RM2022
@alex11_RM2022
When I start the game on the different bo1 zombie maps the fps become slow I have to press pause and wait 5 minutes then I can play the game normally this does not happen to me in bo2, any idea what is happening?