The very first link shown in the results points to the url 'https://community.intuit.com/posts/opening-quickbooks-painfully-slow' (which is exactly our problem).
And what do you think happens when you click on that link?
Oh .. my gosh .. Intuit tells you "Sorry, the page you're looking for doesn't exist." Oh my god .. are these people for real? But then again, I am not surprised. Quickbooks is the biggest software fraud on the market.