External GPU Reccomendations?

We are running Twinmotion & Unreal Engine to create presentations from our ArchiCAD Architectural projects. We are interested in Purchasing an External GPU so that we can run these presentations on the road to an Oculus Rift S (PC Module). We would really like to Run the Oculus and 2 separate LCD Monitors simultaneously - We are looking for a good recommendation for External GPU product and/or GPU Specs. When we are on the Road we will be running these presentations from some pretty standard Laptop Configurations, so we need an external GPU to make this work.