Vr Photo Gallery/Newbie Question

Greetings,

Im creating a VR photo gallery look like classic museum on simple planes and i have a problem with texture streaming pool size, keep extending pool size, currently pool size 3000 and im little bit concerning for the end, im just using simple jpg files as a albedo thats all no complexity, am i on the right way or do i need to use another way for dozens of picture, any idea would be great…

Thank you and Cheers