System Information
Operating system: MacOS Mojave
Graphics card: Intel Iris Pro 1536 MB
Blender Version
Broken: 2.80 beta, 519982fd3ea0 (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen)
Worked: all previous blender versions
Short description of error
the viewports run slow, already in the default cube startingpoint. seems to be 12 fps around consistently
macbook 2015 15 inch 2.2 ghz corei7 16 gb
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).