Zachiii

I cured the problem with super resolution.
 
The old PMGM in and out is crystal clear.
 
How to enable super resolution "5129x2880x32" in FSX without changing monitor resolution:
 
This is for Nvidia graphic cards with current or somewhat current drivers.
 
1)  Leave your monitor resolution the way you want it.
 
2)  Right click on your screen
     click on Nvidia Control Panel
     click on Manage 3D settings,
     click on Program Setting tab,
     click on drop box, click on "Microsoft Flight Simulator 10", leave it there
     click on Global Settings tab (located next to Program Setting tab),
     "Base profile" is in the box
     just below under Settings, click on DSR-Factor
     click on "4.00x (native resolution)" ONLY, make sure of that
     at bottom of page click on APPLY
     next to Base Profile click on dropdown box
     click on "MS Flight Simulator X", DSR-Factor should be "400x (native resolution)" ONLY.
     click on APPLY, close the control panel.
 
3) Load FSX.
   
     Under Options, Setting, Display, Graphics, click on "5129x2880x32"
 
4) your graphics will be super sharp.  enjoy.
 
 
If you have any visual problems, I recommend DX10 Fixer "How -to" Guide
 
To find it, put the title in your search engine, click search, then click on The DX10 Fixer "How-to" Guide-NZFSIM.
 
In this guide there is an important exception, under settings for Nvidia Inspector, Frame Rate Limiter must be OFF

Flew SLC to DEN @ 33k feet without Opus wx.
 
PMDG 737 started tremble @ 24k' and continued as usual.
 
Starting playing with an add-on, AccuFeel. 
 
Determined setting Vne (max IAS) = 0 causes tremble to return to smooth!
 
Problem solved.