I'm going to remake Rumpled Rugs so that it performs better and hopefully doesn't have any issues with duplicate rugs. Unfortunately it's looking like it will need to be a completely new plugin and set of meshes but it should be nicer overall and I can probably make it compatible with LUX too.
Check out the clip attached which shows a quick timecycle of the rugs getting messed up automatically. The straight mesh isn't correct currently, it's just a test!