KYB/Onboarding with PSPs in the Current Era

Anyone working with new PSPs or looking to switch these days? I'm looking for new solutions for the KYB process, which seems to be getting more protracted and complex, especially with markets that are starting to have more regulatory oversight (e.g., crypto or cross-border payments). I've often encountered cases where documents pass, but the process of verifying the source of funds takes so long that it affects liquidity flow. I'm wondering if anyone has found a PSP with a fast and efficient KYB system that doesn't compromise on compliance? Or are there any techniques that can help speed up these processes?