Is it obligatory to pay off the usurious loan I took from the bank, or to continue with its installments?

If settling the installments leads to the waiving of the increase or a reduction of it, then one must hasten the payment according to their ability. Otherwise, there is no obligation to hasten, because doing so benefits those who deal in usury by way of the increase they will take in exchange for the delay, and by way way of receiving the money immediately to benefit from it in usurious transactions.