External access with shared link almost impossible nextcloud 24.07

[tutle]

Hello
in Nextcloud 24.04 and 24.07 Very slow external shared links access, almost unusable from a short time,
I have a very slow “guest” web interface (more than 25 seconds to see the page from external shared link and 25 more seconds to see a pdf) and also some alerts “this folder is unreachable, contact administrator” for existing shared links.
It’s almost at once when connected with my account.
I was with 20.04 and upgrade to 24.07 but stills same problems.
Onlyoffice 7.5.8 in nextcloud.
Any Ideas ?
I’m on yunohost 11.0.10.2 and onlyoffice app 7.1.0~ynh1 and fiber internet connection
Tried to have a look on settings.yml, php.ini, unsuccessfull.
Do I have to reinstall nextcloud to solve this issue ? Seems to have a few problems…
https://paste.yunohost.org/zubikepoko.tex
Sincerely
Yvan

[tutle]

I finally reinstalled nexcloud after a backup, will resend new shared links.
There was one user very strange password error (had to recreate password in webadmin yunohost), seems a ldap trouble.

All was back well working until… a shared link recrash nextcloud… I become crazy…
https://paste.yunohost.org/isiququkam.tex

just found a temporary solution adding brute force app in nextcloud and adding my ip (witch change from time to time) in white list

[tutle]

Well, after investigations in Nextcloud,
if I’m connected to yunohost or nextcloud on my web browser (Firefox), disconnect and change yunohost or nextcloud user (admin account) and then try to open a shared link, the link doesn’t open and there are many brut force attempts in the nextcloud journalisation (I remove them from database with phpmyadmin).
Only solution I found to fix the problem : remove cookies and cache from the browser. Or trying the link on another web browser (not very user friendly). Maybe the reason of user_ldap Bind failed: 49: Invalid credentials error in nextcloud.
The problem seems to come from different users connections on same browser.
I have spip installed on the same domain (subfolder /spip) and spip is based as root access of the domain. is there a possible relation ? Work in progress…