I would avoid trying to make sure you use the "official instance" as it kind of works against the projects purpose of decentralizing web requests. pinging around instances helps with avoiding outages as well. you can find active instances here on the uptime monitor.
otherwise, stealth should work just fine if u turn on webscraping mode. I have been using it since the reddit changes with only very occasional issues, as similar to you I have some quams with alternative reddit clients.1000018448