It has never before worked this good! Outstanding.
I am getting between 80 and 130 FPS in 1280x720 resolution with Caelum sky and legacy material shader option (my Radeon Pro 560 4 GB can't manage those new (PSSM) shadows).
On a 2017 i7 MacBook Pro. Awesome.
If you like softbody physics sandboxes and can't get Beam NG to work, go back to the roots and give Rigs of Rods a go.
Its completely free and open-source, and has some true gems inside.
Gonna post some screenshots.
EDIT: Very easy to set up
• DX 9 from CrossOver Non-Applications
• DX 10 for modern games from CrossOver Non-Applications (not sure if it needs it)
(+ Rigs of Rods itself seems to install VC Redist 2015-2019 in the process)
Then when starting for the first time make sure to choose DX 9, NOT OpenGL (crashes every time)