Web crash - world tracking portal

Hi,

I’m working with the world tracking portal template where I’ve added 16 images. While testing my work, I keep encountering this web crash (attached screenshot). What could be the possible reason for this? Is it because I added too many images, or is it due to the positions where I placed the images?

What is the sizes of your images? Along with pixel size? This usually occours with large texture/image sizes. Please reduce to 1024x1024 or less

Please reference

can you send log or error ?
so we know what your facing a problem