It isn't the "AI" side that is broken. It is just a buggy extension, crashes constantly, and even when it does give suggestions it takes far too long to do so harming your workflow. Check out the less than 2.5 star average reviews on the VS Marketplace:
https://marketplace.visualstudio.com/items?itemName=GitHub.c...
Honestly if you're a Visual Studio developer, I'd say ChatGPT Plus for $20/month is better value than Copilot in its current form which is should be free while they iron out all the bugs. Or if you REALLY want to use Copilot, then you'll need to switch to VS Code instead since the extension in that at least works correctly.