There's some serious regression with OpenGL. Depth buffer has exploded with grass and possible with some other objects. Grass is always in front of objects even if it's not supposed to be. Trying to pinpoint the pull request which has caused it..
EDIT: https://github.com/RPCS3/rpcs3/issues/3165
EDIT: https://github.com/RPCS3/rpcs3/issues/3165