Encrypted installation with LUKS2

My laptop is struggling with the standard YAST LUKS1 encryption which is resulting in really slow boot times longer than 60 seconds.
Have tried to delete the keys with high iterations and renew them, but imho it is a stupid workaround since grub should be able to handle LUKS2 nowadays.

I would like to install TW with LUKS2 like I do on my Arch installations. Has anybody found a way to achieve this? Is there a howto somewhere?

Heads up: cryptsetup switches to LUKS2 by default

Side question: Why do you think LUKS2 will speed up booting?