@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...
testing Control Execute's modded evilnat 4.88 on my 2012a slim (65nm RSX), and so far the only game that shows any issue is RDR, it crashes on boot. if I undo the OC, it boots normally.
RSX seems to be marginally hotter, about 1-2ºC.