Hi,
The Layers drop down box isn’t big enough to read and I notice a few other icons are tiny as well (suclock, solid tool…)
Using a new screen that supports 4K but have tried lower resolutions so not sure if that’s the issue have played with the openGL as well
Overhauling the SketchUp interface to be display scaling friendly for High DPI monitors, is an ongoing effort.
Some things (toolbar icons) were fixed for the v2016 release.*
More things (inference tooltips, scaling handles, edge rendering, etc.) were fixed for the v2017 release.
There is more to do for future versions. (Most of the inspector panels still need some love.)
* Ruby extension toolbar icons need to be updated by individual extension authors, to take advantage of scalable graphics introduced with the v2016 API.