Steam games do not launch in bootcamp Windows 10 on MacBook Pro 2017

[griddiho]

I have the 2017 MacBook Pro 2.9GHz with a Radeon Pro 560 with 4GB of GDDR5 memory and automatic graphics switching Intel HD Graphics 630. The SSD drive is partitioned with bootcamp running Windows 10. When trying to run Steam Windows games in bootcamp Windows 10 almost all of them do not launch (Fallout 3, etc etc), and most give some message about a graphics issue (card, driver, etc). I can run very old games (System Shock 1, Dark Forces 1) and I am guessing this is because the graphs are run in software.

Has anyone else experienced this problem?

I read somewhere that it might be something to do with the graphs switching but I can't find that info anymore, and I believe I have seen video of a MacBook Pro 2018 running Windows games in bootcamp.

So I am hoping there is an easy fix?

UPDATE:
Well, I feel pretty sad that no one has any ideas. And kind-of annoyed with Apple that I have this shiny new laptop and it's not as useful as my ancient hulking old iMac for running games (in bootcamp Windows 10 no less) Argh! I know, should have bought a PC. Only I didn't so I'm gonna have to fix this thing! Boy do I want a face slap solution...