Scaling FX/CFD liquidity for growth – beyond tier-1

We're reaching a point where our existing Tier-1 prime broker setup for FX/CFD liquidity is getting a bit constrained by our projected growth. Specifically looking at scenarios where we might need to onboard a second or even third provider to manage the volume without significantly impacting spreads or introducing undue latency. The onboarding process itself for these larger institutions can be a real drag, especially around KYB/AML for non-traditional structures.

Curious about others' experiences in scaling beyond the initial PB relationships. Have you found success with Tier-2 or prop firms for supplemental liquidity? Any particular pitfalls or unexpected benefits when diversifying? Focusing on maintaining tight spreads and reliable payouts is key for our retail base. Open to insights on how others have navigated this, particularly concerning the operational overhead.