I went to BunnyCDN and peeked at the Cache Settings (Cache HIT Rate 0%). Since I don't know how Viddercon pull is working with BunnyCDN, I fiddled with one setting. Will check back later.
"File Cache Expiration Time Configure how long our edge servers will store your files before fetching for a new version. If Respect origin Cache-Control headers is enabled, BunnyCDN will follow any Cache-Control or Expire headers returned by your origin server."
I changed it from the Default "Respect origin Cache-Control headers is enabled" to "Override 3 months"
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Date: 2019-03-07 10:14 pm (UTC)"File Cache Expiration Time
Configure how long our edge servers will store your files before fetching for a new version. If Respect origin Cache-Control headers is enabled, BunnyCDN will follow any Cache-Control or Expire headers returned by your origin server."
I changed it from the Default "Respect origin Cache-Control headers is enabled" to "Override 3 months"