Scaling(?) issues

[personaobscura]

I know this is an old game, but I'm trying to get Chronicles of Riddick to run @5760x1080.
The resolution is listed in the display options, but the resulting image is not scaling properly and looks pretty poor. Working with different aspect ratios or pixels didn't help. Any ideas as to why this is happening and how to correct it?

Thanks for your time

[BRPunk]

Buy Dark Athena. Has the original in it and both work in triplehead.