I figured as much. As I understand it, the OGL backend is also quite slow for AMD cards so for now it looks like D3D11 is the sweet spot for them.
Windows 10 Pro x64 | i7-9700K @ 4.6-5.0GHz | MSI Z370 Gaming Plus | MSI RX 5700 8GB Factory-OC | 16 GB DDR4-3000
