Got it working with these instructions https://egpu.io/forums/builds/guide-2018-15-macbook-pro-i9-32gb-1tb-amd-radeon-pro-560x-40gbps-550w-sonnet-breakaway-amd-radeon-rx-580-win-10-1803-chris/#post-53059
- Not script needed, just "remove" Microsoft display driver on Device Manager