Yes, if you are planning to use a third party software make sure to add a "Realize Instance" node at the end of Fabric Decorator geometry nodes setup to turn the instances into objects. (This can cause performance issues so make sure to Delete or Mute it once you are done exporting!)

Yes you can easily bake the final results into textures with blenders built in tools or any third party software. if you are planning to use a third party software make sure to add a "Realize Instance" node at the end of your node to turn the instances into objects.

Yes! fabric decorator is designed to be fast and intuitive, so there won't be any lags while you are focusing on the creative side of your creations. however if you are working with very dense environments (thousands of different samples + animated objects, once the animation starts every instance of FD needs to recalculate on each frame and this can sometimes cause frame drops.