analyze https without private key

Hi, I have considered a rather curious problem. It is well known that sometimes you can go slow web browsing various reasons beyond the contracted ISP or network devices that we have, such as bad configuration, pipeline, keepalive, the server does micropauses, etc. With http web traffic (unencrypted) is very easy to analyze the connections with wireshark and other tools allow us to analyze the behavior of the server and client. My question maybe some know, or know some tool to estimate certain characteristics of a secure http (https) connection, such as the time taken between the request-response, duration of response, etc.. Does anyone know of any tools? thank you very much

• Cansado293

PD: without the private key to decrypt the connection