So Rune Classic on GOG never got the 1.11 patch that Steam got.

Will I discovered this mod that adds DX11 support.

https://www.moddb.com/mods/unreal-directx11-renderer-for-ut-ug-rune-and-dx

Haven't tried myself but just wanted to bring it to people's attention.

Maybe someone could do an AI upscale mod for Rune?
DirectX11 renderer supports upscaled textures, normal and height maps

Well, judging from the game files and textures - Rune could be super easy to upscale compared to Undying or Harry Potter 1 games
Everything is very sorted and placed in order and looking exactly like the perfect source for ESRGAN upscale proccess.

https://disk.yandex.ru/d/sCnlM8rimVytvw

Well, someone already did an upscale of Rune

Where is the newest patch? Is there a downloadable one for the gog version? Thanks!

As I mentioned in my original post, GOG never got the update. Even to this day.

I tried the directx11 renderer and the upscaled pack.
It's beautiful but...The renderer is buggy, not enough mature.
The d3d9 is more stable for gaming.

You shouldn't waste your time using that Direct3D 11 renderer because it's nagware.