Just FYI on this subject.  I had this same issue with P3DV5.1 when placing the GTN in the panel of the Carenado C421 using the autofind and replace function in the RXP utility.  I also put it in the panel of the Flysimware L35 using the Flysimware utility and it seems normal there. All 2D panels are high resolution and no problem..

Hi,

It is possible the panel.cfg entry where the GTN gauge is configured is using a lower resolution setting.

This is documented in the official P3D SDK and you might want to cross check this:

https://www.prepar3d.com/SDKv5/sdk/panels_and_user_interface/panels/panel_configuration_files.html

(hint: texture_size)

On 3/7/2021 at 4:32 AM, MikeWings said:

I had this same issue with P3DV5.1 when placing the GTN in the panel of the Carenado C421

Check the panel.cfg file... do you have:

[Vcockpit01]
Background_color=0,0,0
size_mm=1024,1024
visible=1
pixel_size=1024,1024
texture=$Panel_1

gauge00=rxpGTN!GTN_750_1,  0,0,667,794,NO_BEZEL

There are also a few entries in following file you might want to cross check:

C:\Users\<name>\AppData\Roaming\Lockheed Martin\Prepar3D v5\Prepar3D.cfg

[PANEL]
MAX_VC_TEXTURE_RESOLUTION
VIRTUAL_COCKPIT_TEXTURES_SCALE