Onboarding Friction for High-Volume Crypto Transfers

Curious if others are finding significant friction with onboarding newer crypto exchanges or even established payment providers when trying to set up accounts for higher-volume, recurring transfers of $USDT or other stablecoins. The KYC/AML process seems to be getting more intense, which I understand, but the back-and-forth for proof of source of funds, especially when it involves multiple wallet addresses and internal transfers between my own platforms, is becoming a real headache. Are there any best practices or specific types of providers you've found that streamline this for legitimate business operations without getting stuck in weeks of compliance limbo?