Hello All - I've been struggling to understand what could be holding up a transaction I made a few days ago.  I use the bitcoin-qt client and used it's fee calculator (I set to 40 minutes which worked fine for 2 transactions 2 days before that).  I have also made a transaction since this "stuck" one without problems. Some of the details:

Status: 0/unconfirmed, in memory pool
Date: 12/19/17 19:30
To: XXXXXXXX 3KSheFnMYCrtCqakBnU8L4VKPPMztkhSDa
Debit: -42.50000000 BTC
Transaction fee: -0.00709452 BTC
Net amount: -42.50709452 BTC
Transaction ID: c33be8f735d280826cd13dbdee0e286b6b7268c80998f7835537bf1e9a85ec96
Transaction total size: 1872 bytes
Output index: 0

I paid almost 379 sat/B which should have been enough 2 days ago (I trusted the fee calculator in my client).  I've tried some of the free accelerators but I am not sure they do much of anything given the huge trading volumes we're all suffering through.  I've been reading a lot about the backup as of late - is my only option to wait for this transaction to kick out of the memory pool?  Any way I can accelerate the kick-out (or ensure I don't accidentally extend it)?  Any ideas/help would be appreciated.