KYB Friction with New PSP Onboarding - Experiences?

We're currently expanding our service offerings and onboarding a new payment service provider to handle a greater volume of international transactions, particularly for some emerging markets. The KYB process has been surprisingly drawn out, despite having a robust compliance framework ourselves and a clean history. Specifically, the level of scrutiny on beneficiary ownership and source of funds for our existing clients, already vetted and transacting, seems excessive and repetitive compared to previous experiences with other major PSPs. It's causing a bottleneck internally and delaying rollout. Has anyone else encountered a significant increase in KYB friction lately when integrating new PSPs, particularly around established client bases? I'm curious if this is an industry-wide tightening or perhaps specific to the niche we're entering. What were your workarounds or key takeaways?