I'd be pointing the finger at your integrated graphics chipset, IMHO, such things often have very little VRAM. The freezing says to my inexpert ears "not enough memory".
I don't think CdC is quite so graphics intensive, in terms of VRAM needs, but that's just my impression (ie not based on any stated system requirements).
See if you can find out Stellarium's hardware requirements, and see if your grapghics card is up to scratch.
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