HD fury is great if you can get a good deal. The second model is the one I have. It downscales 1080p from my PS4 onlo my 480p display. You will have to use something else to down convert to 15khz or 240p.

See here: https://www.arcade-projects.com/threads/help-ps4-hdmi-to-rgb-for-sony-pvm-converter-with-least-display-lag.2847/

For a few months now I've used a crappy Walmart brand HDMI to AV converter box. The image was very stretched even when setting my PC to a 4:3 resolution, along with it barely recognizing any HDMI cords. It broke recently and now I've been looking for an actual decent replacement. I have looked all over the internet and have not found anything on this. Responses would be greatly appreciated.

Good HDMI to AV converters for my CRTs.