I don't think increasing transaction fee is the answer, this is how cabals take over financial system and will need to understand that you can never satisfy Greed it keeps asking for more, this may be a move by miners to delay moving transactions with low transaction fee.
The unconfirmed transactions pool is about 10 MB.
If you would find a block, would you relay any transactions or the ones with higher fee?
Greed is part of human nature...
The peak was 23 MB (wow), so the miners are doing their job nicely.