GPS Problems - Not accurate

Hi! I'm new here, so I am not sure how this works. My Galaxy S6 Edge got wet 3 weeks ago. It wasn't anything big and after 1-2 hours in rice it works fine. The only thing (and I am not sure if it got something to do with this) is that the GPS is not working correctly. When I try to use Maps App, it is not accurate. I've done everything I read, even did a factory reset, but the problems continues. I downloaded another navigation app but I received a message that the GPS is not accurate. I wonder if there is any other thing I could do or if this is something that can be fix if I take the phone to a repair store.

Thank you!