Unity Editor OSX is consuming ~130% of cpu when i enter playmode but in Unity Windows takes 10% on the same project.
Even just opening an empty project and play it will throttle the cpu to 60%. This a ridiculous high values.
This is happening on a MacBook Pro (15-inch, 2016) with 16GB RAM in Unity 2017.3 and 2018.1.x
Keep in mind Windows and macOS measure CPU usage differently, where e.g. with an 8-core machine, full CPU usage is 100% on Windows and 800% on macOS. Playing an empty scene would still burn CPU since it’s trying to render frames as fast as possible, unless you limit it, such as with vsync, but even then you potentially have a lot going on depending on whether you’re using things like the profiler etc. Playing an empty scene with vsync on, no profiler or other stuff, I get ~17% CPU usage on an 8-core machine. But even 60% I would not call “ridiculously high” since that’s just 60% of 1 core, and you presumably have 8 (actually 4, but hyper-threading doubles the core count).