Hi there, @rhsayles.

Please allow me to join the thread and help share additional information about adding a time tracking users in QuickBooks Online (QBO).

As of now, we haven't received reports with other users experiencing the same performance issue about adding vendors with 1099 tracking turned on, that can't be added as Timer Tracking only user in QBO. For this to be investigated further, I recommend getting in touch with our Support Team. Our support will be able to open and check your account securely.

To get in touch with our Support Team, you may check this link for the detailed instructions: Contact the QuickBooks Online Customer Support team.

On the other hand, to learn more about the user's access in QBO, you can read this article: How to add, delete, or change a user's access.

I'll be always here to help you if you have any other questions about adding users in QBO, just add a comment below. Wishing you the best!