Bad CDN performance

Hey! We are experiencing issues with CDN performance. We use spaces to keep static files for our web app. We tried several times, with several browsers, each time is after the fresh deploy - which means all static files are new, were just uploaded to bucket and CDN cache was purged right after that.

And there is a delay in 40-60 seconds in chrome and chromium for new CDN files (browser show files as pending). The only firefox works fine. Our whole team experience that and we’re all over the world.

Any ideas, what might be wrong?

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I have made one small experiment. Uploaded two new files and with measured the response time from the different locations. I did that in order from top to bottom, from left to right. So for js I see that origin server is faster than CDN endpoint, actually. And for the picture, I see that it takes some time (several minutes!) to actually be uploaded across CDN network. Is that how it suppose to be?

europe, frankfurt cdn: 1.68s; 2.09s origin: 2.25s; 2.19s

europe, london cdn: 2.88s; 2.86s origin: 1.97s; 2.07s

north america, washington cdn: 2.47s; 1.45s; 2.00s; 2.58s origin: 1.63s; 1.47s; 1.47s; 1.47s

europe, frankfurt cdn: 1.70s; 1.70s; 61ms origin:1.48s; 1.45s; 1.46s

europe, london cdn: 1.67s; 44ms (!); 56ms origin:1.36s; 1.30s; 1.34s

na, washington cdn: 908ms; 46ms; 59ms origin: 685ms; 692ms; 693ms