Onboarding Friction for PSPs – Any Solutions for Expedited KYB?

We're currently scaling out our payment processing solutions for a new market segment, and the KYB process with potential partner PSPs is becoming a significant bottleneck. The varying documentation requirements and lengthy verification timelines across different providers are genuinely hindering our rollout speed. Has anyone found effective ways to streamline this, perhaps specific tech solutions or a 'best practice' approach to pre-qualifying or presenting information to cut down on the back-and-forth? The alternative of just absorbing the delays isn't really sustainable.