Updated to the new stable version.
Running bin/console.php worker throws
Die Aufgabe ".../bin/console.php" wurde in 1247 Sekunden abgeschlossen, jedoch traten Fehler aufPHP Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 601882656 bytes) in /.../vendor/guzzlehttp/psr7/src/Utils.php on line 91
PHP Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 803209248 bytes) in /../vendor/guzzlehttp/psr7/src/Utils.php on line 91

That is a huge amount of memory, or???

Can I do anything to reduce the amount of memory the worker consumes, bzw. is this normal?

Testing now with
ini_set("memory_limit","2048M");

And result:
PHP Fatal error: Allowed memory size of 2147483648 bytes exhausted (tried to allocate 1608515616 bytes) in

It seems there must be anything wrong?
Thanks for help!