Wyeast 2565 Kolsch

Ingredients
1

I have used WY2565 on two batches of Kolsch. and the krausen didn’t drop on either of them until I cold crashed them. Is this normal for this yeast?

Thanks!
Dano

2

IIRC it took like 6 weeks for the kraeusen to fall the last time I used 2565. I didn’t cold crash it, but it did linger around for a long time.

3

I wonder if it takes so long because it is such a low flocculater? flocculator? However you spell it.