# Speed up Cosmos Chains Block Times ## Update Tendermint Node Config The `timeout-commit` value in the node config define how long we wait after committing a block, before starting on the new height (this gives us a chance to receive some more precommits, even though we already have +2/3). The current default value is `"5s"` In Evmos, the current blocktime is ~5.9s according to [Mintscan](https://www.mintscan.io/evmos). This means that it takes < 1s to reach consensus and then nodes have to wait for 5s after the block is committed. ```toml # on evmosd/config/config.toml ####################################################### ### Consensus Configuration Options ### ####################################################### [consensus] ### ... timeout_commit = "1s" # <------ update from "5s" to "1s" ``` ## Update Chain Parameters Additionally to the updates in the Tendermint config, the `MaxAgeNumBlocks` Consensus Parameter needs to be updated to in order to verify a valid [double sign evidence](https://docs.evmos.org/modules/evidence/06_begin_block.html#equivocation) according to the formula: ``` Evidence.Timestamp >= block.Timestamp - MaxEvidenceAge ``` - `MaxAgeNumBlocks`: - `SlashingWindow` -