Hi John and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, it would appear to be an issue on how fast the image can be stored into memory. Proposed preliminary tries (if have not been done or a combination of):
I understand and provided the above proposed tries in the absence of these critical information.
Hopefully, another member can provide an alternate approach to your concern. The question would now be re-opened as I would rather opt out.
Please do not reply nor rate so as not to lock the question.