Persistent “no cache” issue triggered by cookies ?

Hi dear support,

Last Report Number: QMUQMCJV
Last Report Date: 10/17/2025 12:16:15

Me again, this time with a staging site so that I can provide full access if required.

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Illustration : https://jumpshare.com/share/BAWi2MntfTpP05JUSJdK

I’m facing a persistent issue where pages on my WordPress site become non-cached whenever any cookies are present — even standard analytics ones like _ga or _gcl_au.

Here’s a summary of what I tested:

• When I clear all cookies → the page loads instantly (clearly served from cache).
• As soon as cookies appear → the same page loads very slowly (not from cache).
• I tried removing cookies one by one — none alone is responsible; only a full cookie wipe restores caching.
• I already excluded the following patterns under “Do Not Cache Cookies” in LSCache settings:
  – sbjs_
  – gaVisitorUuid
  – FPID FPLC
  – ga
  –_ga
  – gcl
  – gaDomain-
  
  → but it didn’t change the behavior.
• I also disabled WooCommerce’s Order Attribution feature and dequeued sourcebuster.js to stop sbjs_* cookies — confirmed they’re gone.
• The issue persists with remaining analytics cookies (_ga, _gcl_au, gaVisitorUuid, etc.).

I recorded a short video showing the behavior: page speed is fine with no cookies, but instantly drops when cookies exist.

Could you please help me understand why LiteSpeed treats any cookies as “non-cacheable”, even when they’re excluded?
Is there another setting or constant I should check (maybe related to “vary by cookies” or Guest Mode)?

Thanks in advance for your help.

Here is admin access using this informations: https://one-time-secret.de/en/g#9l7ze8dndljri4hm/1c0YVNZtp6cDGXUf/1
password is the staging site domain name fxxx-5xxxxx.wxxx.fr

Thank you very much for your time and support — all my pages are properly cached, but I can’t seem to benefit from LiteSpeed’s speed advantage as long as this cookie behavior persists.

Best regards