"How Does Using a Proxy Affect HTTPS Connections? Understanding HTTPS and Proxy Interactions"

HTTPS and proxy setups are pretty standard, but yeah, they can be confusing. The proxy can’t read the encrypted data, but it can see the domain. If you’re using a trusted proxy, you’re good.

As for speed, it depends on the proxy’s location and load. Try using a tool like MTR (My TraceRoute) to see where the lag is coming from.