FPS Problem

Ok, I have been having a problem with my fps in crossfire.And i use to get 45 fps but the graphics are not lagging like it use to be. It started when i download a game called sdgo, Stands for (SD Gundam Online. So when it finished downloading i played it for a while and the graphics there is laggy like around 15 fps so i deleted it. then started playing crossfire again then i noticed that my screen is lagging and my fps is like below 40, unless if i look at the sky and dont move i get around 60 fps. So can anyone help me? is it game that i downloaded that made my fps in crossfire lag?