Segwit should have improved the transaction fees and transaction confirmation times, but due to lack of adaptability of the segwit many people didn't feel the difference about it.
I am moving over to Segwit and it should be faster for now but it still won't go much faster as the
block-chain starts too fill up.
BTC does 7 transactions per second and my guess for Segwit would put it at about double the speed
under the same conditions so in other words they can double the size of a piston (Blocks) in a steam engine
but it's still a steam engine.
Where segwit will pull ahead is because the team is more radical and they understand that they will
need to move over to a petrol engine or better still an electric engine and I don't think they will let the miners
piss all over everyone like the BTC development team has done.
Read up a bit on Ripple and how the protocol works, peek at IOTA Tangle and then see HashGraph
that is not used yet and is under development and then you will understand why I am talking about
old steam engines with Segwit and BTC