Hi @crimsonnight, sorry to hear regarding your experiences with this issue, it is one of the main reasons to change the USB methodology in the 4C to avoid this kind of problem for our users as USB chipset compatibility could not be assured across a wide variety of models.
Apart from solving the USB3 Chipset issues, the 4C offers a range of other improvements which you can read about @ https://help.tobii.com/hc/en-us/articles/212814329-What-s-the-difference-between-Tobii-Eye-Tracker-4C-and-Tobii-EyeX-
Our apologies for this inconvenience, we hope you consider upgrading your hardware and please kindly let us know if we can provide any further information.