Nextcloud Down/Uploads super slow

So anything down/upload to the cloud is so slow, like 1/10 (5 MB/s) of the speed my server is capable of and i have done so much troubleshooting to find issue but now im asking here for help, I have tested direct download from my website(normal web directory) and getting full speeds.
Downloading is slow from webinterface and also with sync client and so on.

server is Dedicated 8 core, 1000Mbit/s connection, 64GB RAM, 12TB HDD.

Nextcloud 17.0.2
Debian 10
Apache 2.4.38
PHP 7.3.11
mariadb 10.3.18

i Use HTTP2 with TLS1.3

No NC logs available in the relevant time frame.
I have done all basic tuning recommended and using redis cache.

Any ideas? Just ask if i forget something important <3 I will be more than grateful if someone can solve this issue

$CONFIG = array (
  'instanceid' => 'Deleted for privacy',
  'passwordsalt' => 'Deleted for privacy',
  'secret' => 'Deleted for privacy',
  'trusted_domains' => 
  array (
    0 => 'Deleted for privacy',
  'datadirectory' => '/var/www/nextcloud/data',
  'overwrite.cli.url' => 'Deleted for privacy',
  'dbtype' => 'mysql',
  'version' => '',
  'dbname' => 'Deleted for privacy',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'nextcloud',
  'dbpassword' => 'Deleted for privacy',
  'installed' => true,
  'maintenance' => false,
  'theme' => '',
  'memcache.local' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'filelocking.enabled' => 'true',
  'redis' => 
  array (
    'host' => '/var/run/redis/redis.sock',
    'port' => 0,
    'timeout' => 1.5,
    'password' => '',
    'dbindex' => 0,
  'loglevel' => 2,
  'force_language' => 'en',
  'mail_from_address' => 'admin',
  'mail_smtpmode' => 'sendmail',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_domain' => 'Deleted for privacy',
  'mail_smtphost' => 'Deleted for privacy',
  'mail_smtpport' => '465',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'Deleted for privacy',
  'mail_smtppassword' => 'Deleted for privacy',
  '' => 'stable',
  'htaccess.RewriteBase' => '/',
  '' => true,

Whats the connection between the client and the server?

Thanks for asking, My home connection is fast 1Gbit Fiber, my friend tested downloading from cloud too and got also slow speeds, the cloud interface itself works good and is pretty fluid but up/downloading is painfully slow. Is there anything i need to provide more? Seems like im stuck with this ;v; Everything “seems” to be up and running normally, atleast without thrown errors so im out of ideas…