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TLS handshake takes forever. This affects IPv6 connections and overall performance.

Making moves

So i've recently switched from Chrome to Firefox and apart from the learning curve, I've noticed some performance differences. Mainly, when I go on, I see the "Performing a TLS handshake to..." for quite a while before the page loads completely. Not only that, but the results are always inconsistent, with IPv4 test failing, sometimes IPv6 and "DNS4 + IP6" constantly failing. Tried disabling Tracking Protection, Addons, checking for advice but nothing. Tried different ipv6 test sites and see the same inconsistencies. Chrome never had this issue tho.