@paulb_nl I flashed the OSSC with the new firmware you linked. It is definitely more compatible with the NES and SNES. I already had TX mode set to DVI, and I’m not sure what has changed under the hood, if anything. 4x mode is still the highest mode both consoles support, although the vanilla firmware still supports 5x for those on my TV, so something is still going on there. However, 4x mode is no longer resulting in any screen blanking.