Rhino Maximum Supported Texture resolution?

Hi there. I am having difficulties working with high resolution aerial images within Rhino.

Working with DWG sent from my client, where the aerial photo is at 0.1m/pixel, covering ~4500m x 3900m. The jpg file is 100mb.

Whilst it opens in CAD, it wont open in Rhino. I had to reduce the resolution by 50%, save it as a tiff, and then open in in rhino.

What is the theoretical maximum resolution of a bitmap texture RHino can handle? This is one example where Xref in Cad has worked, and rhino has not.

Best,
Jeremy