Slow performance due Postgre

I’m moving from a local environment to a local/cloud one where it’s distributed as follows. Locally I have a K3S where I’m running a Redis Server, different Gitlab-Runners and gitlab-ee image (latest) that is pointing to an external database (AWS) and has the data in a local Volume.
The problem that I’m facing is that when I’m using the external database i have something like this:


Where it’s clear that there are more queries and the time is high compared than doing it without an external database:

The gitlab.rb that I’m using is:

external_url 'url.com'

    gitlab_rails['smtp_enable'] = true
    gitlab_rails['smtp_address'] = "smtp.mailersend.net"
    gitlab_rails['smtp_port'] = 587
    gitlab_rails['smtp_user_name'] = "mail"
    gitlab_rails['smtp_password'] = "password"
    gitlab_rails['smtp_domain'] = "domain"
    gitlab_rails['smtp_authentication'] = "login"
    gitlab_rails['smtp_enable_starttls_auto'] = true
    gitlab_rails['smtp_tls'] = false
    gitlab_rails['smtp_pool'] = false
    gitlab_rails['backup_keep_time'] = 604800

    gitlab_rails['backup_upload_connection'] = {
      'provider' => 'AWS',
      'region' => 'reg',
      'aws_access_key_id' => 'key',
      'aws_secret_access_key' => 'secret-key',
      ...
    }

    
    gitlab_rails['auto_migrate'] = false
    postgresql['auto_restart_on_version_change'] = false
    geo_postgresql['auto_restart_on_version_change'] = false

    postgresql['enable'] = false
    gitlab_rails['db_adapter'] = "postgresql"
    gitlab_rails['db_database'] = "..."
    gitlab_rails['db_username'] = "..."
    gitlab_rails['db_password'] = "..."
    gitlab_rails['db_host'] = "..."
    gitlab_rails['db_port'] = "..."

    gitlab_rails['redis_host'] = "..."
    gitlab_rails['redis_port'] = ...

    puma['worker_processes'] = 0

    sidekiq['max_concurrency'] = 10

    prometheus_monitoring['enable'] = false

    gitlab_rails['env'] = {
      'MALLOC_CONF' => 'dirty_decay_ms:1000,muzzy_decay_ms:1000'
    }

I’ve tried also to upgrade the requirements of the external database and it’s still like in the first screenshot. Also, I have other services (not GitLab) that works perfectly.

Thanks!