Trying to browse some well known websites (stripe.com, github.com among others). The message 'Performing a TLS handshake to <domain>...' is displayed for a long time, then the timout page appears. On a new and empty profile, with ipv6 disabled or not, the issue is similar but without timeout. However, the website starts loading after a long delay, about 10s. I can see the same behavior on Chrome but not on Midori browser (always starts loading after 1s). What can I do ?