Too slow page load after 5.4.6 with XenForo 2.1.8


Well-Known Member
Today I've upgraded to LSWS 5.4.6. After that, our XenForo forum encountered a bizzare bug. Threads with first visit were taking too much time to load! But once I got into the thread, it was fast during the revisit.

At first, I thought it was related to Redis cache, but no. Then I thought it was the XenForo 2.1.8 Patch 2 but then again, no.

After reverting back to 5.4.5, the problem was solved!

Here is the XenForo thread with a video showing the problem:

Server config:
  • Centos 7.7
  • PHP 7.3
  • MariaDB 10.3


LiteSpeed Staff
Are you using 5.4.6 build 0, or build 1? 5.4.6 build 1 contains a bug fix for HTTP/2.
Can you please open a ticket with server access info.
We need to investigate.