This can be given an attention to in the UI update.
My internet connectivity is supper fast and I can stream 8K videos so it's not the problem and I won't say it's loading but bit laggy that is where the improvements needed but as said they are actively involved in developing to better version so these inputs might help them from we as community so they can focus on things easier.
You wrote "stream," well... That doesn't mean your connection is configured correctly. For the casino, download works, and you may have the problem there. In fact, with 100MB, you could already stream at 2K. If your network isn't configured correctly, you may have the problem there.
In the case of improvements, I hope one day I can eliminate having to search for a code in my email.