(1) Did you verify that SketchUp is using the AMD GPU via the AMD Radeon Settings ?
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‘Good-bye’ to AMD Catalyst Control Center, and ‘Hello’ to Radeon Software
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YouTube: AMD Crimson “Radeon Settings” control panel
See application settings under “Gaming” at ~0:10secs.
(2) Use a 3rd party utility to switch OFF SketchUp’s OpenGL Hardware acceleration, from outside SketchUp. (To verify that perhaps your driver has OpenGL deficiencies.)
@sketch3d_de, Has this tool been updated to set SU2016 registry attributes ?
(The date still says 2014 on the download page.)
(3) Verify (via the Windows file explorer,) that you have read and write permissions on this folder:
%APPDATA%/SketchUp/SketchUp 2016/SketchUp/
… and all it’s sub-folders.
(You can paste that path into the Windows explorer breadcrumb bar and it will go to this folder. Windows knows what it’s environment variables are.)
The first time SketchUp starts, it will create “Classications” and “Plugins” sub-folders, then copy the distributed plugins and an IFC classifications schema into these folders.
So this step is to verify that these sub-folders are being created, and the 5 “shipped extensions” are being copied, (ie, “su_advancedcameratools”, “su_dynamiccomponents”, “su_sandbox”, “su_trimble_connect” and “su_webtextures”,) as well as the IFC schema “IFC 2x3.skc” to the “Classifications” sub-folder.
(4) Get the SketchUp Diagnostics utility and create a diagnostics logfile:
SketchUp Diagnostics for Extension Problems
(5) See also this thread re Crimson drivers and SketchUp 2016: