So my devkit really does not like ntsc output. The main screen works fine, but many games or demos will have minor to severe graphcs issues. As an example i've uploaded two images captured from my old logic levels c64 cart, though many others also have issues. For instance the frogs prgoram that game on the SD card only displays a black screen in ntsc mode, but starts working correctly once I switch to pal. Is this a known issue? And if so is it being worked on? I've tried running a newer bitstream from december 27th 2020, but this issue was still present.