PC Engine Arcade CD Games not working (and fix)
I remember that some people had problems running PCE Arcade CD images (but I can't find the exact posting right now). Most answers usually tend to point at BIN/CUE naming errors and stuff, but when my games recently stopped working (from working just fine before), I found that ENABLING the REWIND feature in the GUI (or in the Retroarch) settings causes this behaviour. Disabling the feature fixes those games immediately....
Might be useful to remember for anybody running into this problem.