Solana processes more than 162 million transactions every day with closing times of an average of 390 milliseconds. That speed is more than sufficient for most users. For trading firms, arbitrage bots and liquidation engines, this is hardly enough margin to work with.
The difference between landing a transaction in slot 0 and landing in slot 2 is not a rounding error. It’s the difference between a profitable execution and a missed opportunity where the fees have already been paid. Late landings at Solana are not free. Priority fees paid to win a slot will still be charged when the transaction arrives after the chance has disappeared.
This is the problem that P2P.org built Syncro Sender to solve.
The real sticking point isn’t Solana. It is the path to the leader.
Most teams submitting transactions to Solana use public RPC endpoints. These are designed for accessibility and general use, not for execution-critical workflows. They share bandwidth with thousands of concurrent users, do not prioritize time-sensitive transactions, and run over a limited number of paths with no guarantee of immediacy or speed of delivery.
Research has shown that Stake-Weighted Quality of Service is the most effective mechanism for reducing transaction landing latency for all transaction types, outperforming both priority fees and Jito tips. Standard public RPC endpoints, which are not associated with a disabled validator, do not have access to SWQoS priority bandwidth. They compete for the remaining 20% or so of leader capacity in addition to every other unsealed connection on the network.
The result is structural: teams that rely on public RPC compete for the remaining 20% of available bandwidth, regardless of how much they pay in priority fees. Fees affect ordering after a transaction has been received. They do nothing to increase the likelihood of it arriving at all.
This is not an API problem. It’s a network design problem.
What makes Syncro Sender different from other Solana transaction senders
Syncro Sender is a Solana transaction sender built on P2P.org’s validator infrastructure, specifically designed for execution-critical workflows. Several architectural choices differentiate it from standard RPC submission and from competing shipping solutions.
Validator level routing over SWQoS connections. Syncro Sender routes transactions through P2P.org’s deployed validator infrastructure, allowing transactions to access priority bandwidths reserved for deployed connections. This happens at the network layer, before cost-based ordering comes into play. The benefit is most pronounced during congestion, which is exactly when it matters most for trading and liquidation workflows.
Multiple delivery to current and future leaders. Instead of relying on a single submission path, Syncro Sender simultaneously sends transactions via multiple routes: directly to the current block leader, to future leaders identified through the leader schema, and via parallel spawned validator connections. Whichever path the leader reaches first determines the outcome. The others become redundant. Independent 2025 benchmarks of Solana transaction endpoints confirmed that without SWQoS and well-placed infrastructure, even high-fee transactions consistently fall within seconds. Multi-path delivery over deployed connections pushes teams into sub-second territory, already giving them a head start on the majority of network traffic.
Global infrastructure in six regions. Syncro Sender endpoints are deployed in Amsterdam, Frankfurt, New York, London, Tokyo and Singapore. Because Solana’s leader roster is constantly rotating, consistent performance across slot leaders requires geographic coverage, not proximity to a single location. The endpoint closest to the active validator cluster processes each submission, minimizing network hops and reducing latency at each step.
Drop-in integration without logical changes. Syncro Sender works as an additional submission endpoint in addition to the existing infrastructure. Teams don’t need to rebuild their transaction flow, change their signing logic, or replace their current providers. The only change required is to add a tip instruction to the transaction. Most teams use Syncro Sender in parallel with their current configuration, comparing landing performance against real transaction flows and evaluating the results directly.
Solana transaction landing performance in production
Syncro Sender reports a transaction lock rate of 99.2% and a slot 0-1 landing rate of 99% in production traffic from trading firms and searchers. The average latency is 1.2 slots.
For context, a July 2025 peer-reviewed study published in ACM Proceedings on Software Engineering that analyzed more than 1.5 billion failed Solana transactions found that automated accounts experience a transaction failure rate of 58.43%. For execution-critical teams, the gap between network-average performance and purpose-built infrastructure is where execution outcomes are determined.
Built on P2P.org’s validator infrastructure
P2P.org is one of the largest non-custodial staking providers in the industry, with more than $10 billion in assets validated across 40 blockchain networks. Syncro Sender is built directly on top of that validator infrastructure, meaning the deployed connections it routes through don’t come from third parties. They are P2P.org’s own validator relationships, maintained and operated as part of the same infrastructure stack that secures billions in deployed assets.
That infrastructure depth enables the SWQoS priority routing and global endpoint coverage that define Syncro Sender’s performance profile.
Get started
Syncro Sender is available via a public endpoint for testing without requiring an API key, and via a dedicated private endpoint for production use. The public endpoint supports a maximum of 1 request per second with a tip of 0.0001 SOL per incoming transaction. The dedicated endpoint supports up to 50 requests per second with full support for the RPC method.
Teams looking to understand how Solana transaction landing works before integrating can read the full technical overview in P2P.org’s Solana transaction landing walkthrough. Full integration documentation, including endpoint details, tip configuration, and code examples, is available in the Syncro Sender documentation.
For teams where execution is the edge, routing is where that edge is built or lost.
Disclaimer: This is a sponsored post. Crypto does not endorse any of the projects mentioned in this article. Investors are encouraged to conduct the necessary due diligence.