I am working on it Carsten - if you run at 1920 resolution are you still seeing the slow cursor issue?
In my Nvidia Card Settings, there is an Option to Set the Intel or Nvidia or Auto as the Default and then in another Tab you can set the Graphics Card to use for your different Applications - I reset mine to Auto for TBC and for the Default and this has made some difference - it has not totally fixed my issues but it appears to have improved a bit at least.
I notice that it gets worse with time also - are you seeing the same issue - i.e. if I am working for several hours in the product, after a while or after I do something specific, things really slow down - and I cannot tell if it is TBC or another application that is causing the slow down as I use Camtasia a lot as well as Web Meetings etc and those could also be having an effect on my productivity.
Alan