Material management limitations: creating multiple separated and foldered maps with different categories, for example, 1000 different material models.

Hello, I have a large library of textures and different materials, including: bump maps, albedo maps, displacement maps, etc. But to create materials using these maps in Substance Sampler, for example, I have 50 fabric maps in the fabric folder and different models of fabrics such as silk in that folder. The number of these materials is large. So, the number of folders is large. Can you add a feature so that I can customize these thousand materials?
And finally, about the process of exporting to (sbsar) format, I set the compression to fast, and it even outputs a 128 output with a size of 1.5 GB. But when I set it to slow or auto, the process of exporting each material takes about 10 to 13 minutes. My RAM is ddr5 and 32 GB. My graphics card is 4060 with 8 GB of vram (I should mention that I also adjusted the Cache Storage settings embedded in project files and set it to Full Cache Storage). I expected more from version 6.0.1 of Substance Sampler. Of course, I have to say that this is a masterpiece in general. I hope my requests will be taken into account in the future, thanks