Polygon Cuts Block Time For First Time Ever

First Block Time Reduction Since Genesis

Polygon (@0xPolygon) shipped a chain upgrade on Wednesday, cutting the block time for $POL's network from 2 seconds to 1.75 seconds. It marks the first reduction since the network launched in 2020, a notable milestone for a chain that has kept that parameter unchanged through several major hard forks.

The change targets the Bor layer, the execution component responsible for processing transactions on Polygon PoS. According to the team, the tighter block interval delivers a 14% increase in transactions per second, giving the network meaningfully more headroom for high-volume use cases.

Payments Push Drives the Upgrade

Polygon has been explicit that payments are its primary use case, and this upgrade fits within a broader performance acceleration effort. The team has been executing on what it calls a GigaGas roadmap, a series of targeted upgrades aimed at pushing throughput and finality to competitive levels. That roadmap officially targets 100,000 transactions per second while maintaining low-cost execution and fast finality.

Earlier milestones on that path included the Bhilai hardfork and Heimdall v2, which together pushed throughput past 1,000 TPS and cut transaction finality dramatically. Heimdall v2 modernized the consensus layer by replacing older components with CometBFT and Cosmos SDK v0.50, reducing transaction finality from one to two minutes down to roughly five seconds. More recently, Polygon activated the Rio hard fork on its proof-of-stake mainnet, a sweeping upgrade that redesigned block production and introduced a Validator-Elected Block Producer model, which Polygon claims eliminates chain reorganizations and shortens block times.

The block time cut announced this week builds on that foundation. By squeezing 0.25 seconds out of each block interval, Polygon is adding capacity without requiring a fundamental restructuring of the execution layer, a relatively low-risk way to lift throughput ahead of more complex changes still in the pipeline.

Polygon has signaled its intention to push block times even lower over time, with longer-term goals pointing toward a one-second target. Wednesday's update appears to be the first concrete step in that direction.

Sources
Stakin: Understanding Polygon's Bhilai and Heimdall Upgrades
The Block: Polygon Activates Rio Upgrade
Polygon Docs: Bor Architecture