I have Google Fiber, and I can't say I get a ton of captchas (other than sites that have them for everyone, e.g. unauthenticated contact forms). The only downside to v6 was I had to get a new router because my old one couldn't route v6 at gigabit speeds (could easily do gigabit symmetric on v4 only, but topped out at 400/400 Mbps on dual-stack).
Back when I had Spectrum (which was Charter in my area pre-merger), their v6 worked fine as well.
I have Google Fiber, and I can't say I get a ton of captchas (other than sites that have them for everyone, e.g. unauthenticated contact forms). The only downside to v6 was I had to get a new router because my old one couldn't route v6 at gigabit speeds (could easily do gigabit symmetric on v4 only, but topped out at 400/400 Mbps on dual-stack).
Back when I had Spectrum (which was Charter in my area pre-merger), their v6 worked fine as well.