I really appreciate your efforts on this.<p>I am fairly certain that I experience the same latency issue with right-click context menus in Windows Explorer as what you have described.<p>I was hopeful that the recent acquisition of a new machine with a fresh WIN10 install on it would provide me relief from this issue -- but the situation is unchanged with the fresh install.<p>Your research shows me that the underlying situation and cause is hardly something that "I am imaging" -- this is an ugly piece of mis-performant code.
Any idea how to do something similiar on Linux? I'm using Plasma 5 on Arch Linux and from time to time I'm seeing mysterious hangs (seconds to minutes) on the Plasma UI - CPU profiling is probably useless and for me it looks like perf record is just way to broad and the hangs are not due to CPU churning but probably something else (scheduler or locks - I have no idea), I'm not a dev but it would be nice to be able to at least produce a proper bug report and searching the root cause.
Too bad Microsoft is too busy with integrating ‘telemetry’ spyware and parading their ‘wasting your resources isn’t our problem’ mindset to fix these obvious issues that have been part of the Windows experience for decades now.