I plumped for "Too early to say"....

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I find it impossible to run acceptably on my existing system at present, and I am hoping that over time the program will be "modified*/improved?" by Microsoft to make it accessible to more users...

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In the meantime, because my add-on Payware favourites, ie; FS Navigator, LAGO FSE, Abacus EZ-Scenery, etc, have not yet been released to be compatible with FSX, I am continuing to use FS 2004 for all my daily flights.
Cheers all...!
Paul... 8)...!
* A selection of slightly downgraded packs of folder objects/scenery/effects/etc to replace the existing hi-res/high detail objects, etc, in the existing folders which consume so much memory, resources, etc, on "lower-end" systems....?
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.