I suspect a lot of it comes down to your ISP. Like the original commentor I also frequently can’t pass CloudFlare turnstile when on Wifi, although refreshing the page a few times usually gets me through. Worst case on my phone’s hotspot I can much more consistently pass. It’s super annoying and combined with their recent DNS outage has totally ruined any respect I had for CloudFlare.

Interesting video on the subject: https://youtu.be/SasXJwyKkMI

What’s wrong with IONOS? Their VPS prices are some of the best out there and reliability has never been an issue for me.

How? I’ve been noticing buffering the last few days with 1080p60 videos and up even using the suggested app version in Revanced.