I have DP11 here on Win10. It is stable. The only negative with DP on Windows that has been there since the beginning, is that it isn't as snappy as Cubase, especially with large templates. Scrolling through the mixer can be a chore, and navigating, starting and stopping playback can have some noticeable lags. This is not plugin compensation or buffer related (i.e. anything the user can solve). It may be graphics, or just DP not being as optimized for Windows. My video card is more than sufficient. I've tested it many times trying to find ways to improve DP's responsiveness with large templates, using identical plugins, routing, VEP connections as I have in Cubase, and even using alternate reverbs, and routing approaches/simplifications that seem more efficient in DP specifically.
Busses and VEPro connections (VRack or within a Sequence, doesn't matter) seem to be the main culprits for DP, where Cubase scrolls effortlessly and responds quickly with exactly the same template configuration (I duplicated my template in both to compare). I still like a lot about DP, but it just doesn't feel smooth and responsive on Windows (8 or 10). I am curious if it is better in that regard on OSX.