I'm also facing same issue with wifi on latest build, my issue is similar as you describe but happening to 5ghz wifi connections.
Anyone knows anyway to fix with without reflash/format.
I have also replaced the media profile you gave and recorded video in stock camera i only get 30 fps and gcam with only 24.9 fps. I have no idea what you settings are or version you use or maybe it could just be because of overclock kernal?
Finally a different answer, I have secure boot disabled maybe this is the reason ending into bootloop for past 3 montly security updates. Will try this for May update.