Borrower’s fourth mortgage foreclosure delay suit was properly dismissed as barred by the res judicata effect of the prior three judgments against her, two of which had been affirmed on appeal. All the actions involved the same cause of action as they all asserted a violation of borrower’s ownership interest in the property that was subject to her deed of trust. Though she argued the new suit was based on new facts about the alleged payment of her loan in 2015, that alleged event occurred while her third suit was pending, and she could have amended her complaint in that action to allege the same facts now alleged in her fourth suit. Res judicata bars issues which were or could have been raised in the prior litigation.