Optimization : One big media player or several small?

Hi everyone,

I’m trying to understand which is the best for my 3D scene :

I have 5 screens and get two options :

1- I can make one big media texture, a video of 20482048 pixels that will be repeated in each screens and split each parts thanks UV (mosaic kind).
2- I can, also, make 5 media player/texture that will play at the same time several different videos, maybe 1024
1024 pixels or less.

So I was wondering what is the best option for this? One big one or several small media player?

Thanks for your help !