By various, you mean specifically the PAL x3/x4 tweaks in the OP, or something else?
Yeah, I’ve tried the settings for x3 and x4 PAL in the OP.
I’ve also tried Marqs’ setting here
Those are for an EZ950 which is a very similar TV. However they’re for NTSC so I doubt they apply here 🙁
The display is showing 313p ~50hz and 1280×288 (x4) or 960×288 (x3).
Thanks for your help anyways, the TV can do 4:3 but it introduces some nasty lag. Better than nothing though!