I'd like to second this remark.
If you want to save weight, use shorter tree huggers and reduce the rest of your suspension components by using the lightest dyneema cording you are comfortable with. But using narrower webbing is not a good idea, either for softer tree barks or for the perception of hangers as Leave No Trace compatible campers.
There is some really fairly lightweight 1" polyester webbing available from several of the vendors here on the forum. Choosing the shortest length of this that is suitable for your area is perhaps the best approach.