How can I / we get the fastest Doom 3? свет, текстуры, помогите пожалуйста. with shadows in textures integrated maybe

[Folker]

Hello my dear Doom (3) fans. I tried dIII4a on the OUYA with Tegra 3 and 1 GB RAM. It supports DXT textures. I tried it with lighting ON/OFF and I got between 5 and 17 frames most of the time. Without shadows and lights and only diffuse textures, I got ~ 42 to 65 FPS.

So my question is, if there is a version or a method, to optimise Doom 3 (dIII4a) for weak hardware, so that it maybe could run on a Raspberry Pi 3 with OpenGL ES 2.0

I saw this video:
https://youtu.be/KQSIT18bOvg?t=355

Doom 3 was running on a 3dfx VooDoo 2 with only 12 MB VRAM graphics card. So ...
Are there some hybrid version or texture-combining techniques to create a good looking version, not like Ultra Doom 3, I guess, but better than Low-settings all off, with maybe some good frames per seconds ...

Would be nice, to get some hints, links etc.

Если вы можете: Пожалуйста, помогите, спасибо большое

Thanks for help.

----- Doom 3 ... Raspberry Pi 2 ----- very slow, but possible ....
https://www.youtube.com/watch?v=4s63Of4bstg

Without Lights
https://www.youtube.com/watch?v=Ll6QlmwmM9M

With lights (Tegra 4)
https://www.youtube.com/watch?v=jm7GJnOXgw8

And for Raspberry Pi 3 and the OUYA, or also SNES / NES / PS1 mini classic, I guess, we would need a version, that runs like "without light", but looks a little bit more like it would have the shadows and lights in the textures.

[Folker]

Maybe I found something ... Doom 3 to Doom 2
It uses Doom 2 textures but in Doom 3. So it could run faster and better.

https://www.youtube.com/watch?v=SRl8ZN3xlQo

https://www.moddb.com/mods/doom-3-to-doom-2/downloads/doom-3-to-doom-2-v09