by pop-ins are you talking about the raindrops that appear in front of the character in those two YouTube videos?
By the way, Nice Graphics.
Have you tried to open a Support Ticket with the game's creator or checked to see if there are any new game patches to install?
Possibly if there is a new game patch it may resolve your problem with the latest AMD Driver. If not do as kingfish suggested and open a AMD Service Request Ticket to let AMD know of the problem with the game.