The Kaby Lake G platform is unique in that it combines an 8th-gen Intel Core CPU with Radeon Vega M graphics. Attractive a proposition as this - and some of the PCs on which it is based - sounds, it quickly ran into support issues. Now, it seems it has a new one: it can't install newer drivers, which are normally supplied by AMD.
https://www.notebookcheck.net/Intel-Kaby-Lake-G-reportedly-loses-AMD-driver-support-all-of-a-sudden.469551.0.html
To be honest, I've never been a fan of AMD bundling CPU and GPU drivers. For example, I have an old AMD gpu that I use sometimes and a Zen CPU. I have to use old CPU drivers because if I use new ones the GPU will not work.
As for Kabylake G, I was interested in it at first but few laptops had it. So I waited and looking at the mess of Intel giving up on it despite, I'm glad I waited.