Hi @lucile370,
Texture streaming runs on vRam, not Ram.
That being said, I looked into the specs for the Pico 4 and its graphics card, the Adreno 650, does not have a dedicated vRam, so any vRam allocation is being run on the Ram. What this means is that you don’t have 8gb to dedicate to your texture pool, as it has to share its resources with all of the Ram’s normal processes. I would try limiting yourself to streaming size to 1k to save room for everything else.