Yeah, we had the exact same headache with our openpayd payment provider setup slowing to a crawl every single weekend. Payout queues were completely freezing and our support desk was drowning in angry tickets. What finally saved us was stopping the guesswork and completely overhauling our fallback logic. I stumbled on some raw technical notes at http://igamingpaysolutions.com/openpayd/ that broke down alternative routing workarounds. It took a bit of testing to map it properly, but it completely cleared the latency bottleneck for us.
