Request priority with map website

Hello,

we have a website which provides map content (map tiles). The content of tiles is image/tiff. There is huge amount of requests when map content is rendered with slower latency.
Beside, there are some API requests (application/json content) related to user interaction, which are blocked when map tiles are being loaded.
Is there any way to prioritize API requests before map tiles requests?
I tried to set response header cf-priority (suggested by [blog](https://blog.cloudflare.com/better-http-2-prioritization-for-a-faster-web/)), which would solve this issue, however, we don’t have Pro package yet. Is Pro required for using cf-priority header?

Thanks for any help.

Hi @geovio.com,

It would be required that you are on the Pro plan.

Thank you.