Crunching sound from rear left hub?

Hi I am trying to pinpoint or try to figure out this crunching coming from the ass end of my 2014 RZR s with just under 1000 Kim’s on it. It seems to be coming from the drivers side rear and gets progressively worse as the day of riding goes on.

I’m aware of the brake issues and these crunching or metal clacking sounds are still audible with the brakes on. I also hear a similar sound when I rock the machine back and forth.

I checked the driveshaft as you will see in the video and it does have some movement but the sound seems to be segregated to either the wheel and bearing or differential.

Could you have a look at the videos and let me know if anyone has had to deal with this before and what the fix was please.