Hi there! It sounds like you're experiencing some interruptions while trying to watch RSBN during President Trump's press conference. I’m here to help you get that sorted out.

First, let's check a few basic things:

1. Check Your Internet Connection: Ensure that your Macintosh is connected to a stable internet connection. You can do this by trying to open a different website or streaming another video to see if the problem persists.

2. Clear Browser Cache: Sometimes, a full cache can cause performance issues. Here’s how to clear the cache on your browser:
- Open your browser (like Safari or Chrome).
- Go to your browser settings.
- Find the option for Privacy or Security.
- Look for "Clear browsing data" and select cache/cookies.
- Then, restart the browser and try watching RSBN again.

3. Try a Different Browser: If clearing the cache doesn't help, try using a different web browser, like Google Chrome or Firefox, to see if the issue continues.

4. Check for Browser Updates: Make sure your browser is up to date, as older versions can sometimes cause streaming issues.

If you've checked all these options and the issue persists, it may be worth checking if there are any known server issues on RSBN’s end, especially if many users are trying to access the stream simultaneously.

Are you able to try these steps? Let me know how it goes!