Why Skylake CPUs Are Sometimes 50% Slower – How Intel Has Broken Existing CodePause on the new Skylake CPUs is an order of magnitude slower. Sure things can get faster and sometimes a bit slower. But over 10 times slower? That sounds more like a bug. A little internet search about the pause instruction leads to the Intel manuals where the Skylake Microarchitecture and the pause instruction are explicitly mentioned: https://www.intel.com/content/dam/www/public/us/en/document
