It does that to my install on change of specific video settings. FidelityFX Super Resolution or PPAA, but not consistently. One time it did that after i launched clear install and changed settings to Ulara through drop down menu and then increased PPAA once. Other time i didn't use Ultra preset but did everything manually, at this time change of PPAA did not trigger the issue but FidelityFX Super Resolution did.
To make Reforger working again i remove profile folder in the user's Documents folder. It then let me launch the game, but obviously all the settings are reverted back to default, which is annoying.
Just to add to confusion it seems that there are no such issue on other machines where i have Reforger installed.

Still an issue