Originally Posted by
Dark Knight
When it comes to custom themes the only "compatibility" you need to worry about is that you install the correct theme designed for your build for example Windows 10 RTM themes will not work on Windows 10 TH2 or Anniversary Update, Windows 10 TH2 theme builds are not backwards compatible to RTM or to the Anniversary update, same goes for the Anniversary update, they are not backwards compatible nor will they be compatible with the forthcoming Creators Update. Your graphics and ram you have plenty enough of, not that any of these custom themes would even put a strain on your system.
Looks like you're running TH2 because the current build of Windows 10 is 1607 OS Build 14393.953