I am also having this problem. I am running latest version of luma. I used the ntr boot method with r4 card to hack. I am having trouble with games like rytmik ultimate, rhythm paradise, runbow pocket, and steamworld heist. I have a us region console, though i have sucessfully installed several eu cias. I tried us and eu versions of rytmik to no avail. Any help would be greatly appreciated. I am happy to post and crash reports. Thanks!