ok stupid question but have just opened halion 4 in cubase and it’s bigger than the cubase screen! In fact, it’s bigger than my computer screen 
How do I shrink it and get access to cubase while it’s open?
Time to get a new screen or fiddle with the resolution (not good). Monitors are real cheap now
screen works fine on everything but halion.
resolution changes make no difference.
Post a screen shot on the maximum resolution your computer/monitor can muster?