I didn't see what was right under my nose. From the log file:
Your graphics card does not (completely) support OpenGL 4.
Code:
·E 0:05:13.146503 {rsx::thread} RSX: OpenGL: initialization of glDepthBoundsEXT failed.
·! 0:05:13.146603 {rsx::thread} RSX: 3.3.0 - Build 20.19.15.4390
·! 0:05:13.146617 {rsx::thread} RSX: 3.30 - Build 20.19.15.4390
·! 0:05:13.146623 {rsx::thread} RSX: Intel
Your graphics card does not (completely) support OpenGL 4.
Asus N55SF, i7-2670QM (~2,8 ghz under typical load), GeForce GT 555M (only OpenGL)