I have this issue too, Didn't have this issue before A20.
Sometimes it happens just after loading, Other times I can play for an hour or so before it happens.
I only play online with my brother (I host the game) and the problem seems to happen quicker when playing together.
My brother doesn't...
Left clicking to change the camera is much better, Don't know how I didn't know about that lol.
Using Joy2Key I was able to map the "Share" button (ps4 controller) to left click, Problem solved :D
Would be better if the vehicles had a Chase Camera, As it is right now I have to use both sticks just to steer and keep the camera behind me.
It's a bit pointless.
Reverting to pre patched game.
I found a good one while googling (I think it has been posted here before too)
Valencia
(case sensitive)
Map:- https://i.imgur.com/nB7VwHN.jpg
It has many medium and large towns with a very large town near the middle.
I've not seen any wasteland as yet.
I have only managed to scout 2 towns...