QHY had the same problew with their Ascom driver and found a memory leak and fixed it, i hope you can do some testing too and fix the Ascom driver so it's stable.
I can also mention that i'm having a problem where the first image after i connect to the camera sometimes doesn't download, stopping the download of the image and doing a new capture works ok.
Camera is connected directly to the pc with Lindy USB3 cable.
Win 10 Pro
According to your description, I am not sure if it is a memory leak for us.
If there is a memory leak, according to our design, the camera should not run normally after that.
And for your problem, I suggest you send an email to our support, we will help you to enable the SDK log, maybe that will help us to find out what happened.