Onboarding speedbumps: What's the real deal with KYC/KYB and payout efficiency in prop firms?

I've been looking deeper into prop firm options lately, and while everyone talks about the evaluations and the profit splits, I'm finding myself wondering more about the backend infrastructure. Specifically, I'm curious about the actual user experience regarding KYC/KYB. It seems like a lot of firms, in their rush to onboard, have varying standards or processes that can either be lightning-fast or feel like pulling teeth. Is there a discernible pattern here, or is it just the luck of the draw with individual firm operations?

Beyond that, the flip side is payouts. We all want to get paid on time, but what's the typical wait like, and what kind of friction points have people encountered? Are there specific types of payment processors or banking relationships that seem to facilitate smoother, more reliable payouts, or conversely, ones that consistently cause delays or charge excessive fees? I'm trying to get a clearer picture of what 'efficient' really means in this space, especially as I consider putting more capital through these channels. It's one thing to pass a challenge, another entirely to reliably access the profits.