@zecoxao when I'm on the OC CFW and try to open RDR, the PS3 shuts down, gives the three beeps and the power LED starts blinking red every time. all other games run fine for extended periods of time (tested GTA V, IV, MGS4, WRC5, L.A. Noire, and KZ2). tried reinstalling the game, erasing data, nothing worked, went back to stock CFW and the game runs normally.
I suspect the OC may trigger some sort of instability with RDR, since the game crashes as soon as it tries to go to the title screen, where the world is rendered in real time. I tried following your guide to make a MFW with the lower OC values, but I'm having issues with MFW builder, it always gives me errors.
any chance you could perhaps build a 600/700 or 550/750 that I could test in my specific case?
chances are I just lost the sillicon lottery with my 65nm RSX.