I am running on an iMAC 2020 27" with a Radeon Pro 570 4GB .... I play Fortnite in Bootcamp on Windows 10 Home .... A week ago before the last update Fortnite was working perfectly... now it is glitching (flashing) like crazy ... even in the menu... seems like an issue with shading/transparancy ... I have seen videos of people fixing the issue quite easily with a few minor graphic card settings... but not for AMD ... looks like a quick fix, just can't put my finger on it.... PLEASE HELP!!!!!