I tested the latest HestiaCP on Debian 9/10 and Ubuntu 18/20 and found that except for Debian 9, the SSL negotiation time of the website is very slow.
E.g.
On Debian 10 and Ubuntu 18/20, the SSL negotiation time of my website was ~450ms.
On Debian 9, it was ~270ms.
Any idea, what could the issue?