Audio export much slower when "Update display" is selected

New issue for me in Cubase 9, didn’t have this problem in previous versions.

  1. Open a project
  2. Export -> Audio mixdown
  3. Select “Update display”
    3b. Do the same but without “Update display”.

The export is MUCH slower when I have “update display” selected, one song I’ve tried with takes 8 minutes with it ticked and around 2 minutes without.

Cubase 9.0.1, Windows 7 64 bit. Plugins from Softube, Waves, Soundtoys, Valhalla