My experience today (flying with LH) was actually quite good.

At 07:45 we joined the queue which doubled snaked back to the start of the chicane, just after the entry gate where you scan your boarding pass.

The queue moved steadily throughout and after I went through the security arch my tray was waiting for me.

There were about five trays selected for secondary.

This was my first time going through the new style scanner and it was slightly better than usual.

It took maybe eight minutes.