I'm using SGP for capturing with the ASI6200, i see large differences in memory usage with the native driver (which is unsuported in SGP) and the Ascom driver, it get to the point where i'm losing images because of memory errors.
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.
PC specs
i5-8500T
16GB ram
Win 10 Pro