While I can agree with most of what you are saying the simple fact is that most apps work perfectly in other DAW’s with HiDPI enabled. Namely Studio One 4, Ableton Live, Reaper, Bitwig which does suggest that it is more a Steinberg issue than an app developers one but obviously not in all cases. Bottom line I can use can use any of the DAW’s I mentioned with my VST’s, HiDPIswitched on, screen scaling at 125% or 150% without any problems I just want Steinberg to allow me to do the same.
AGREED! EVERY OTHER DAW CAN SCALE VSTs properly.
I need 4k, I need even 8k soon for working on games/videos. It is 2020, they should be able to fix it. Otherwise I have to use Ableton/Bitwig/FL Studio to compose and then Cubase/Nuendo for mastering.
Here is an example of
and more cut off
There is a workaround to download JBRIDGE (but then the midi controls/quick controls/VST controls do not work properly), but Steinberg CAN FIX THIS AS OTHER DAWs have conquered the problem.
Here is a picture of the unusable VSTs in Nuendo/Cubase: