You are paying 80sat/byte. Not a small fee, still much smaller than the recommended.
The interesting part is
https://btc.com/stats/unconfirmed-tx recommends 150 sat/byte and
https://bitcoinfees.21.co/ recommends 220.
The mempool is bigger and bigger. You need much higher fees if you are in a hurry.
More and more have heard of this, more and more are using it and the limit is filled faster.
all of the slow confirmation caused by spending unconfirmed transaction , i have experienced something like that too.
But recently i heard there a lot of people complaining about this unconfirmed transaction number getting bigger.
I don't know if there some people doing a stresses attack again on blockchain metwork? it is possible right?