Recent delays in blockchain confirmations and reason behind it

It was due to segwit implementation, on 24th august, it has been finally approved, now the transactions will be faster and fee will be relatively lower. Those who have been facing conformation issues for 24 hours should get the confirmations in a few hours.
“Ledger releases Segregated Witness support” @LedgerHQ https://blog.ledger.co/ledger-releases-segregated-witness-s…
"Segwit introduces the concept of block weight which changes the way the transaction size is computed by splitting the signatures in a different area — you can typically save 35% of the fee paid when sending a transaction immediately"