Tested now some GC games, I was looking for vertical stretched ovals... to my surprise it seems that there are also horizontally stretched games like 1080 (~1,0575 PAR) and starfox assault (~1,07639 PAR) (probably Mario Kart DD too), wind waker is vertically stretched (~0,961 PAR). I attach some images. Also tested more games that seemed to be fine like Sonic Adventure 2, BG&E, F-ZeroGX (?), wave race, Mario Sunshine.
This is a proof that something odd is going on. I think the point to argue is how to accurately calculate this weird aspect ratio, and introduce a PAR option to Dolphin (DAR is bound to resolution so it's not relevant here).
Comparison here
This is a proof that something odd is going on. I think the point to argue is how to accurately calculate this weird aspect ratio, and introduce a PAR option to Dolphin (DAR is bound to resolution so it's not relevant here).
Comparison here
Spoiler: