The secondary scaling takes care of the post rendering proces and predefined get upscaled by primary rendering
For example: if set to 24 inch monitor same brand in surround mode with together resolution of
3840x 1200 desktop than the sim sees this resolution the same
if i now set secondary scale to 0.800000 than post render reads 3072x960
Now i have set primary render to 200 or as is in usercfg.opt 2.000000 than
It renders at a resolution of 6144x1920
For this setting, resolution is incredible high.
To get the 3840x1200 i would have set primary to 125, or 1.250000 in usercfg.opt
I guess this shows a balance point imo because to the minor secondary setting of 1.000000 you can up your primary above 100 in taa which imo is good (sharpns the image and creates overhead
On the other hand if your system is a beast you can up secondairy let say 1.200000 and you will find to set taa primary lower around 80 for it ups secondary and lower primary and image will stutter, while first option smoothens. Also notice the use of memory use.
Airbumps mentions
Can you tell me what “secondary scaling” does or changes? Does it set the second and third monitors to scale to 70% or 80% of the resolution of the main display?
I would say no but it leaves more timing to synchronicing between the differrent screens on alignment.
Tarik youve asks
Thanks but lowering the LOD like this, is maybe the same tips if you set on graphic lower settings directly on the SIM no ?
This what i describe about primary and secondary is not directly related
About lod terrain or detail i use 400 by 200, but if i reduce this lod (whether it is level of detail or load on distance) (i think for Tlod it means level of detail, and Olod means load on distance) this create more space to up things like houses and trees and other while they are all related to texture resolution.
Many thing are possible but this is what i noticed since early days of the this version of the sim
and i use dx12 all the time for it.
Hope this helps