black shadows surrounding objects

[Tankercow]

whenever I walk around I can see these weird black shadows moving around objects. it's just on the outline of them. objects meaning trees, plants, houses, etc. it's not a huge nuisance, however I'd just like to know why it happens.

if you guys need an example I could try and get a screenshot but it's really not too noticeable so it might not even matter.

edit: derp, found out why. ambient occlusions were on in the nvidia control panel. this can be closed or whatever, sorry.

[BicycleMafioso]

Closed as per request
Also, don't worry about, the forum is here to help others, so never feel bad about having to ask a question.