TigerVNC - how to change quality?

Question

I'm using tigerVNC and I'm quite satisfied with it but I can't seem to be able to change the quality level. Appending arguments behind $vncviewer like QualityLevel=4 doesn't help, because it is choosing it automatically based on your bandwidth

CConn:       Throughput 1275 kbit/s - changing to quality 6

And quality 6 is way too much. More over I don't have 1275 kb/s but 1024 kb/s.

It renders incredibly slow. Can't use it like this.

Answer 1

So the parameter that turns this feature off is -AutoSelect=0

Manual says that

  AutoSelect     - Auto select pixel format and encoding. Default if           
                   PreferredEncoding and FullColor are not specified.          
                   (default=1)

but it also affects QualityLevel among others