Thank you, it looks like the newest available driver is installed.
It’s unfortunate, but I don’t think I can fix that issue (easily) on my end, as it seems to be related to a non-standard GLSL shader used by the overlay, which is ignored by AMD and Nvidia drivers but not by the Intel driver.
I guess as long as players can unlock achievements (which seems to work) it should be fine for now and I hope the problem can be addressed in a future release. I also hope for a future overlay support on macOS (and even Linux 
).