More people use Directx11 or earlier, and Windows 10 only makes up the minority of the market. Not everyone likes Windows 10. There are others who use Windows 8, 7 or are running the game on a Mac with bootcamp thingy. It would be a lot of work for Frontier to make a new version that, if they did, we should have to pay for the time and resources they put in (eg. a DirectX12 version of the game).
15fps IS PLAYABLE, it's just not a PREFERABLE frame rate, to play at. Take a look at big youtubers like silverrett, strictoaster, and oli. They do popular videos and in some of their videos, they run into like 10fps or less than 20fps, yet they still play the game. Why? Because they like the game. The heart of a game is the ideas of the game, not the ability to play it at 4k 60fps before you start getting any enjoyment from it. However, the higher the frames, the much smoother the game will perform. I think some people take for granted the stuff others work hard for, then complain like cry babies that they're getting 15fps when they don't have a high end gaming PC which meets all the "Recommended", not Minimum, requirements for this game. There are even people who say 30fps or anything under 60fps is unbearable. The full version of this game only came out late last year. And we have people already whining about low fps. Give Frontier some time. They do a great job with this game. Just because you have a GTX 1080 and an 8 core 16 thread CPU clocked at 4.8Ghz doesn't mean you can demand 1080p 500fps from every game.
A frame rate that is unbearable would be anything under 10fps. If it's hitting 15fps hey, at least it's hitting double digits. And 60fps is double digits too At least with 15fps it's not a frozen screen you're running into. Think of it as this game is so awesome, that hardware is struggling to keep up with all the fun
