Hey folks 
We’re working on a mobile app in UE5 that’s basically aiming to beat Replika – at least visually 
We’re going all-in on real-time lighting, since Lumen is still experimental and too unstable for mobile.
The goal is to get the best possible look on mid-range Android and iOS devices – while keeping performance solid.
So I’d love to hear from anyone who has tips or experience with:
- Mobile-friendly shaders that still look decent (e.g. fake SSS, nice skin shading, ambient stuff)
- Lighting tricks for softer shadows and better depth – without Lumen
- Tools or workflows to profile and optimize the visual side (GPU usage, shading cost, etc.)
We’re already pushing skeletal meshes, lip-sync and emotions on the characters, so every bit of performance counts 
Really looking forward to any advice, links or examples you can share!
Cheers,
Lukas