Initial server response time, LCP failed

Hi,

I recently changed hosting to Hostinger and installed LiteSpeed cache per their recommendation.

However, since then, my site is failing core web vitals due to LCP issues.

The main issue is the initial server response time.

I see this header responses:

HTTP Header

HTTP/1.1 200 OK
Connection: Keep-Alive
Keep-Alive: timeout=5, max=100
x-powered-by: PHP/8.2.13
x-dns-prefetch-control: on
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
content-type: text/html; charset=UTF-8
x-ua-compatible: IE=edge
etag: "9079-1703539481;gz"
vary: Accept-Encoding
platform: hostinger
content-security-policy: upgrade-insecure-requests
x-qc-cache: hit
content-encoding: gzip
content-length: 23056
date: Mon, 25 Dec 2023 22:28:07 GMT
server: LiteSpeed
x-qc-pop: NA-US-EWR-HYBRID-133
alt-svc: h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"

Not sure if the plugin is caching as indented.

I’ve been looking into other topics and by looking into the debug log found out that I have this line: [Ctrl]?forced no cache [reason] DONOTCACHEPAGE const.

I tried to apply the php code to override it, but it didn’t work.

Then I created a stating site and deactivated all plugins and still see the same line: DONOTCACHEPAGE const and same headers response.

Then on this stating site I deactivated litespeed and activated wp-rocket and I do not see the initial server response time issue any more and get this other headers:

HTTP Header
HTTP/1.1 200 OK
Date: Mon, 25 Dec 2023 21:59:05 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
cache-control: public, max-age=0
expires: Mon, 25 Dec 2023 21:59:05 GMT
last-modified: Mon, 25 Dec 2023 19:48:44 GMT
vary: Accept-Encoding,Accept-Encoding
platform: hostinger
content-security-policy: upgrade-insecure-requests
x-turbo-charged-by: LiteSpeed
CF-Cache-Status: DYNAMIC
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=X%2FsXFp%2BE%2FBLgalV4iRsG0W273oUCux%2FbL0BMD8jlRmCGIpoLBiuTRcrnvENx5XnhWuf9C%2B8CViHu%2ByHpQJmsnVBnL9NzqD1HF1lzl%2BTd3Y1VIMUw%2BrGXWiHnCSUjF%2Ba4WR2%2B7PE%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 83b45963fbbc198e-EWR
Content-Encoding: gzip
alt-svc: h3=":443"; ma=86400

Would you mind confirming if litespeed is caching properly mi site?

Report number: BLRQORBK

Report date: 12/25/2023 22:33:55

Thanks!

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