Mostly happy with Jetwash mod version 3.6 other than too much contrast which makes it difficult to see things such as lineside signs. I read the manual and there is no mention of adjusting shadow contrast.

I found what I think is a viable solution:

• Downgraded from ultra to high version of the Jetwash 3.6 mod
• Right click on desktop and select display settings
• Scroll down to HDR and click Use HDR
• Click on the right arrow of HDR and turn on Auto HDR
• In SDR content brightness, move slider all the way to the right.

Running Jetwash mod 3.6 high

Seems to be a bit better now...