A New Reach Problem Has Started and Not The Zero Reach - New Algorithm?

I have 11 pages with over 3 million followers combined. As of yesterday post stop reaching beyond 4k. This one is new for me as I've had the 0 reach thing a few times on some pages but gotten the reach back. Now the pages are just super low reach. some post won't reach more than 1k on pages with 400k+ followers when usually we get 30k-100k reach. All started after the vegas shooting. I'm hoping its just that sports links are being pushed down and will return later. I've also shared links from main news publications on the pages and these posts see the same reach as mine so it's not a website problem. Anyone else experiencing this?