The problems you are experiencing @mobilebackup and @agwin, are most
likely due to the way the workaround works.  Correct me if I am wrong,
but the workaround is asking the graphics system to render a larger
canvas (say 2x, 8K or whatever) and scales this down to the viewport
size.  If an application is not enabled for HiDPI mode, they will be
very squished.  If you don't have sqaure pixels (like most of us), you
will get bad text, and if you don't check for orientation, the viewport
will break.

The reason I said this is a fab workaround, but won't hold for
production, apart from above, is we are asking the card to render a huge
area.  If you move windows around or watch video with GPU decoding, the
card is going to have to move a huge amount of data around.

These are my ramblings, for whatever they are worth.

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https://bugs.launchpad.net/bugs/1870736

Title:
  [nvidia] Screen scaling 125% gives 200%

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