Ubuntu 16 w. Unity-Desktop having several Desktop-Issues

Hello,
I'm running Ubuntu 16 with Unity-Desktop now for a few month and I still notice a lot of annoying issues. I would like to questionaire who is already having this bug and try to figure out how to get rid of them or file a specific bug for unity.

1) Sleep-Modes causes that all open Windows loose their Window-Position.
     I'm using a setup with two displays combined with Workspaces. After sleep-mode all open program-windows positions are
     messed-up. This can be very annoying.

2) After Sleep-Mode very often one of the displays is not attached correctly again. I get a message-box notifying about that. I use a
    Notebook with external display (HDMI). The joke on this is... sometimes the external display is working as the primary and the
    internal display of the Notebook is not attached again. It only helps to re-attach them manually by f.e. pressing FN+[Switch Display-
    Mode]-Key on my Keyboard.

I can only imagine two possible sources for these problems... but I'm not sure at all:
- I am using a NVIDIA Graphics-Adapter with the drivers provided by Ubuntu (the stable one - also tried different versions)
- This still is a generic issue in Unity and/or Compiz?
- In Compiz I already tried around to change settings and disabling stuff that I don't essentially need.

I am also open for any different Desktop. But I really like the left-sided Launchbar and the Launcher-Button provided by Unity.

- Does anyone have experience using the Unity-Launcher f.e. with Gnome or KDE?
- Does anyone also have these issues with NVIDIA-Drivers and Unity or any other Desktop than Unity?

I would be very glad to get some feedback and response in hope to fix that.