I'm also facing this problem, the armory page and buiyng new sigils always freeze the game for me, also after this patch half of the time the game freeze also in the login screen and i need to kill the process and restart few times before it let me in.
OS: Win 10 Home 64-bit
GPU: Nvidia gtx 960
GPU Driver Version: Geforce game ready - version 472.12
CPU: Intel i5 6400 skylake
Motherboard: asus z170 pro gaming
Storage Device (HDD/SSD): SSD