Been pretty skeptical of the "sub-second blockchain" claims because there's usually a big gap between demo conditions and what actually happens under production load. Happy to be wrong on this one.
Tested a few chains running on dedicated rollup infra recently and finality times during normal operation are sitting in the 150-300ms range. Not cherry-picked benchmarks, just using the chain normally. For reference most web2 payment APIs land somewhere in the 100-300ms window too. We're basically at parity now for transaction confirmation speed on Ethereum-aligned infra. That's kind of wild considering where things stood even 18 months ago.
The reason this matters beyond the technical curiosity angle is that speed was always the credible objection to crypto payments and gaming. "Nobody wants to wait 15 seconds to confirm a game action" was a legitimate knock. That argument is gone now. What's left is UX and onboarding friction, which are solvable software problems, not fundamental infrastructure limitations.
Still bullish on ETH L2 overall. The infra matured faster than most people expected.
Sub-second finality on L2 is real and I genuinely didn't believe it until I saw it
byu/Acrobatic-Bake3344 inethtrader
Posted by Acrobatic-Bake3344