No, in contrary. With low spec machines, like my 2008 MacBookPro, the later versions of XP10 runs slower than the first ones. But it runs and it runs fine if you don't use a lot of third party scenery and high-end aircraft. I use XP10 to enjoy the look of the mountains and the accurate shoreline. But when I want to fly from city to city, with good sceneries around, I still use XP9. For half a year I spend almost equal time on both sims. When more aircraft and scenery will be converted to the XP10 standard, I reckon I will use 10 more and more. But for good results I need new hardware for that.