Custom Resolution Utility (CRU)

[apeezyfosheezy]

Hi there, I get this white box when I try to use 320x240 in CRU on a CRT TV with crt emudriver on a radeon hd 5450 via hdmi to component video and I have no idea why.

Please see attached pictures showing the issue and my CRU values.

I’m a total newbie at this so I am learning as I go! I have no idea how to get rid of it as I’ve tried adjusting about every setting. Is there any way to fix this or am I going about this all wrong?

Also I do have a working super resolution for 2560x240 but I also need 320x240 for something that just won’t play nice with super resolutions.

Thanks so much!