Real full screen issue?

Hello,

I was doing some debug log for another issue and I saw something strange: if I uncheck “use full screen window”, one of my CPU core (not all but just one and not always the same) usage goes to 80-100% as soon as I move my mouse fast or play a video

Is it a normal behaviour or something goes crazy with Krypton nightly?

[Image: 160913095049276922.png]

[Image: 160913095049474787.png]

Debug log if it could help: http://pastebin.com/7cGh5szz

Thanks for your help