Would anyone know if 10 Mbs - 15 Mbs is fast enough internet speed to use QBO without any major slow downs?
Welcome to the Community! QuickBooks Online is designed to allow for use on almost any internet connection so that you can take your work wherever you go. I'm happy to shed some light on the system requirements for you.
For QuickBooks Online, QuickBooks Online Accountant and QuickBooks Self-Employed, the minimum internet speed required is 1.5 Mbps and the recommended internet connection is 3 Mbps or higher. So with 10 to 15 Mbps, you can use QuickBooks Online without worrying about any connection related slowdowns. You can read more about the system requirements for QuickBooks Online in this article: System requirements for QuickBooks Online, Accountant, and QuickBooks Self-Employed
If there's anything else I can help with please reach out!
The internet bandwidth is one thing but you have to make sure you have a reliable connection to run QBO. You may try streaming a movie or play a youtube video with a quality of 360p (480p or higher would be better). If it runs smooth without any buffer, you are ready to run QBO and listening to listening music on internet at the same time.