I have been trying to create new dark libraries for my ASI120MM-S camera in PHD2 using the ZWO ASCOM driver. PHD2 gets as far as the first exposure at 4.5 seconds and times out. Increasing time to download has no impact. My configuration is Windows 10 20H2, PHD2 2.6.9, ASCOM 6.5SP1, native ZWO driver 3.16, ZWO ASCOM driver 184.108.40.206 (tried all 6.5.x drivers with same result). I can create a dark library using the native ZWO driver but prefer to use ASCOM.