indeed this works as a workaround
for others to clarify the steps in Ubuntu or Variants, here are the 2-4 steps:
Open up this file "/usr/bin/teamviewer" with a text editor (gedit in my case,) from a terminal
$ sudo gedit /usr/bin/teamviewer
Add this line to the beginning save, and exit, and restart TeamViewer
'export QT_SCALE_FACTOR=1.33' (1.33 or larger 2 works well)
Always trying to help, Mark
p.s. in 1080p it now works without any workaround with the new Awesome NVidia 415 Driver for Linux