"TLS has exactly one performance problem: it is not used widely enough"
https://istlsfastyet.com/ "TLS has exactly one performance problem: it is not used widely enough"
https://istlsfastyet.com/The information in that site doesn't actually back up the headline. It handwaves away the extra-round-trip issue with "well, there are experimental ways in the works to eliminate one of those extra round trips" which is worlds away from saying there are "no performance problems" with TLS in practice.