From the client side. You can’t know what it should be like without knowing the client.

I’m sure there are lots of DO clients seeing the same things we did, but not realizing it.

We did see it (multiple DCs—we didn’t just not try to fix this before going to AWS) in multiple cases with tens of clients so if there’s good news it’s that if you can monitor like 100 clients distributed over a wide area and all of them behave as expected you may not be experiencing what we did. What we saw was closer to 5% with absurd slowness or frequently-dropped connections than to 0.01%.

And if you are just operating a website and sticking Cloudflare or whatever in front of DO anyway, this doesn’t matter. I expect that’s why it’s not a more widely-reported issue.