first go ingame into settings and double check the changes stuck (ie cloud is still actually turned off in Grim Dawn ingame), if it didn’t that’s its own issue(/settings file is being blocked or read only)
then do this, step by step
afterwards, when you launch into the game, double check you’re in regular mode(main campaign) or if you’re in custom mode/where your char might be in a mod
then do something ingame, exit game, double check if changes actually occurred in the documents/my games/grim dawn save folder (char save date should be upated to few seconds ago/when you just exited)
if it didn’t it might mean the game isn’t actually saving to the location so your changes aren’t being affected,
In that case it might be your saves are being pulled to the onedrive folder (same sub path),
and then that’s where the folder/file changes need to be made for the map file