Let's see so everyone parrots WireGuard is king of speed right which sure fine if all youre doing is running default settings from some provider app but try setting up your own server with custom MTU values thats where things get interesting Spent three days messing with config files because my speeds were trash compared to OpenVPN which shouldnt happen turns out most guides set MTU at 1420 by default but depending on your ISP overhead that can cause packet fragmentation which murders throughput dropped it down to 1380 after some pinging around suddenly Im pulling near line-speed its not magic its literally one number being wrong thats just noise though right Anyway ran WireGuard versus OpenVPN UDP across five different VPS locations for two weeks logging every spike guess what WireGuard still wins overall latency but only if its tuned right otherwise its slower than old reliable has anyone else hit this wall where default configs are basically sabotaging their own performance