Really slow Visio 2016 startup.

Hi.

We expirience really slow startup speed for Visio 2016.

Approx. 1 minutte to get past the splashscreen and 1 minutte to open the first "new blank drawing". The time spend is the same if I open a drawing directly by double clicking the file.

When Visio is "loading" the splash screen it becomes unresponsive, and a lot of calls (~25.000 per second) are sent to the registry:

HKLM\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Classes\Installer\Components\F6B8D9D6FE0D0CB4D84D90DDC62E3B00

When I open the first drawing, the same happens, only it is a sligthly different key: HKLM\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Classes\Installer\Components\F6B8D9D6FE0D0CB4D84D90DDC62E3B10

Still a lot of calls (~25.000 per seconds).

How can I optimize this behavior?