Anybody else with this problem?

Some settings (controls, audio) aren't saved between game starts. I've googled extensively, but found nothing related. So maybe it's a gog-version-specific problem?

I've installed the non-galaxy version.

I've noticed this bug too. I save the Options in the game, but if I exit and reload the game the settings are unchanged. Is there a way to fix this?

There is also some discussion of this in the release thread: https://www.gog.com/forum/general/release_spec_ops_the_line_4659f/post169

I've made a post about this and it's cause here:
https://www.gog.com/forum/general/spec_opsthe_line_needs_galaxy_to_work_correctly

The new patch fixed the settings bug! Thanks GOG!