Photoshop Elements 11 and Premiere Elements 11 should work fine on Windows 10.
I have been there and done that.
Although my primary program is Premiere Elements, I have looked at some Photoshop Elements versions on Windows 10. More recently Photoshop Elements 6.0 and 10.0 in particular.
My general impression so far is that the Elements problems and successes are the same before and after upgrading to Windows 10.
Please refer to my comments in post 6 of the following thread found in the Adobe Photoshop Elements Forum.