Rendering single screen with multiple PCs

I am working in virtual production with nDisplay and can not get my mind around if it is possible to render a LED powerwall (single screen setup connected to PC vie display controller) with multiple PCs in same network? I need those extra GPUs to get better FPS.
If not - what would you recommend me to do?

if you are trying CPU works stuff (Like Shader Compile) you can use XGE technology. but for GPU (or even CPU) works you can search for “Cloud Rendering”.
But I think it does not work for GPU in unreal