A couple of points for those having trouble with the video feeds.
The feed does not come from the dorna site. Not directly anyway. It will come from an Akamai server somewhere.
But presumable Dorna are paying for that, and need to keep their subscribers satisfied.
Having said that, you need to find the server and do a speed test to that server, or more likely to the same city.
If you can't view the video and you are using Firefox, try another browser. I use Crazy Browser.
Don't expect any replies to your complaints to Dorna. They never reply. They are the most ignorant and arrogant bunch of pricks I have ever had the displeasure to deal with.
I have been trying to get them to change my email address for nearly 1 year.
The only time I have heard from them was when they obviously had major problems and the feed did not work. They sent a message of apology and allowed a couple of extra views of the racing in Hi-Res.
I would be interested in hearing of any problems, but there needs to be some test performed, and we need to know the city you are in.