I don't know we've heard any performance/latency issues before that concern issuing script evaluation over the protocol. Were you sending hundreds of scripts to

I don't know we've heard any performance/latency issues before that concern issuing script evaluation over the protocol. Were you sending hundreds of scripts to evaluate? Or payloads far over 1MB? Regardless, if you're having problems.. definitely file a bug and get our attention. new.crbug.com or https://github.com/ChromeDevTools/devtools-protocol https://github.com/ChromeDevTools/devtools-protocol will do the trick. [I'm on the DevTools team]