I would use ASI cap for deep sky, settled on RAW16 for capture a series of single frame (in FIT mode).
I used ASI294MCPro, exposure time 120s, gain 300, work temperature -10°C.
Settled limit to 50 frames and start capture.
ASI cap make the directory where saves files, but not saving any file, or saves only the first file.
Other time ASI cap closed it self, that is a very strange behavior.
The platform is windows 10 64bit.
Have you some suggestions?