I installed Deepin 15.10 today and Kwin is amazing, now feel so responsive, smooth and the animations are great (although I would like to know if Deepin devs will then include all the animations that Kwin has on KDE Plasma in the future)  but some apps like Google Chrome or Gparted (All third-party applications) have a little stuttering when I maximize or minimize the app. In the end I found the cause of this and it is the title bar if I disable the title bar on Google Chrome the problem is fixed but I can't do this with Gparted because this option does not exist in that app or on Spotify.
You guys did a great job and I hope you can solve this, anyway very good update.