diff --git a/admin_manual/installation/nginx-root.conf.sample b/admin_manual/installation/nginx-root.conf.sample
index 6616f89f9a1..f4ffe9b7fc5 100644
--- a/admin_manual/installation/nginx-root.conf.sample
+++ b/admin_manual/installation/nginx-root.conf.sample
@@ -63,6 +63,11 @@ server {
     # with the `ngx_pagespeed` module, uncomment this line to disable it.
     #pagespeed off;
 
+    # The settings allows you to optimize the HTTP2 bandwitdth.
+    # See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
+    # for tunning hints
+    client_body_buffer_size 512k;
+
     # HTTP response headers borrowed from Nextcloud `.htaccess`
     add_header Referrer-Policy                      "no-referrer"   always;
     add_header X-Content-Type-Options               "nosniff"       always;
diff --git a/admin_manual/installation/nginx-subdir.conf.sample b/admin_manual/installation/nginx-subdir.conf.sample
index 199cce26450..79f37a41f17 100644
--- a/admin_manual/installation/nginx-subdir.conf.sample
+++ b/admin_manual/installation/nginx-subdir.conf.sample
@@ -86,6 +86,11 @@ server {
         # with the `ngx_pagespeed` module, uncomment this line to disable it.
         #pagespeed off;
 
+        # The settings allows you to optimize the HTTP2 bandwitdth.
+        # See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
+        # for tunning hints
+        client_body_buffer_size 512k;
+
         # HTTP response headers borrowed from Nextcloud `.htaccess`
         add_header Referrer-Policy                      "no-referrer"   always;
         add_header X-Content-Type-Options               "nosniff"       always;