BTC is not too slow, it doesn't really need the additional capacity...it's spam attacks slowing it down. If it needs speeding up the lightning network will sort that out. For example dash and litecoin are faster but that isn't helping its adoption.
if you check the volume on the bitcoin chain itself, it is impossible for it to be slow...most bitcoiners are hodl-ers.
The mainstream is afraid of adopting bitcoin, they know it will destroy fiat, government and central banks! I've decided to give you a follow!