Currently there is a maximum amount that can be passed into the Dynamic Input, 1MB. I often hit this limit and it is infuriating. If this was upped to 5MB that would solve a lot of my issues, but 50MB would be AMAZING.
Thanks for reaching out. I work for a VERY large company and can pass anywhere up to 20million values into a dynamic input, this obviously hits that 1MB limit. Its not often, but when i do it all breaks, this was more of a quick question of how hard would it be to up that by a MB or two.
We can replicate the Dynamic Input tool with a Macro to add capabilities. I would be happy to help you construct a macro, for your situation. You are welcome to email me joe@joemako.com and we can setup a screen sharing session to walk through the process.