Onboarding Friction for High-Volume Crypto Merchants

We're currently scaling up our crypto payment processing volume significantly, and running into persistent issues with KYB/onboarding with several larger PSPs. The requests for documentation often feel redundant, and the timelines for verification are becoming a real bottleneck. Has anyone found a reliable way to streamline this process, especially when dealing with higher value transactions and multiple legal entities? Curious if others have had better experiences with specific types of providers for this particular use case.