

That means your CPU should be just fine, though single thread performance could still be an issue.
If the overlay can’t show you all the cores separately, you would need to alt+tab to check the proper CPU graph from time to time. If single thread performance is a bottle neck, you should see a single core staying at 100% for a long period of time or multiple cores taking turns to briefly visit 100% load.
You can mitigate that issue to some extent by making the videos short. As long as the user count remains relatively small, the storage and bandwidth costs aren’t going to spiral out of control. Eventually you’ll have so many millions of active users that you’ll also need to figure out a way to get a steady source of revenue. I wonder how Loops will tackle that issues. Some mastodon instances already have a small yearly fee, so I guess video instances could do that as well.