Hello @Jason_Tulloch,
I believe this should fit in the comment, as the test results mentioned previously shows that image size between 3k - 117k takes 500ms - 3.5 s but if it is taking more time that needs to be looked at. Could you test using the alternate method using signedURLs as well?
I will confirm this with the product team and get back to you.
Thanks again for your patience.
Cheers,