There is now a WIN 7/8 compatible version available that you can install by opting into the beta branch called "win7-8-alternative": Right-click the app in your library -> Properties -> Betas
This one has a resolution of 4096*2304px instead of 4096*4096px due to older WIN systems having an outdated "Media Foundation" framework.
Other min. system specs still apply (also see FAQ thread in discussion section for infos).
