So I just wanted to update with what seems to be a fix so far and what I did that worked thanks to both of your suggestions. That way others may hopefully see and it helps.
I did delete all three of those callouts. They were definitely helping with the instability issue. (Quick edit: By all three callouts I mean also traffic policer. I recommend downloading custom pullover mod. That's the only thing I miss about traffic policer that Bejoijo's mods doesn't seem to feature that I know of.)
I did not have to delete AmbientAi callouts. However, I set Ambient Response to "false" and left RejectedCalloutAi to "true" in the config settings file. This way it doesn't give callouts for the Ai but allows them to respond to ones I reject. This is a nice mod and I would love to keep it. But I can see how much strain it puts on the game after a bit. So far I have played multiple times for about 45 mins to an hour with zero crashes. If I get any other issues I will delete AmbientAi callouts entirely since changing one setting made such big difference.
Thanks again for the help!