Increased secure connection latency

[pmeenan]

Try turning on "Ignore Cert Errors" and see if the performance changes back to what you'd expect. The only change that I see in the history in that date range that seems likely to have impacted was this one: https://github.com/WPO-Foundation/webpag...7e0feb5404

Prior to the change, the IE 10+ agents were always ignoring cert errors and doing it by stubbing out the chain validation (which probably included OCSP checks). Now it is only stubbing it out when explicitly requested.