15 R4, touchpad drivers messed up

I recently took my 15 R4 into a repair shop get my badly mangled palm rest replaced. I suspect that they may have also replaced my trackpad, but they did not mention specifically in the quote or on the bill. When I got it back, the trackpad was extremely sluggish, and the multitouch gestures didn't work. I traced this back to a driver issue. For some reason the trackpad is installed as a PS/2 compliant mouse. Updating the driver didn't work, nor uninstalling and reinstalling from device manager. I also tried to manually install drivers from dell's website, but that's only a marginal improvement with the trackpad now being listed as HID compliant. I did find some bootleg synaptic drivers that restored my multitouch gestures, but they also cranked up the dpi to be super high. This is manageable for the cursor since I can set cursor speed, but the multitouch gestures are unusably sensitive. I also tried downloading the Alienware Pointing Devices application from the Microsoft store to get more information, but it simply will not open. I am not sure how to proceed.