Quiz Results not Stable for every Attempts

I am currently working on a project that has 8 items in a quiz. ( it has branching within the assessments and I have them randomized by randomizing the 1st item that will be pulled out from the pool). My problem is whenever I test the retake quiz feature its giving me different results. I even had a failed result even though I answered all the questions right. Can someone help me with this? I badly need help. Btw, I have all the graded slides reset to initial state and I have 13 points each and a passing grade of 91%. But that passing grade can still change as long as only 1 mistake is allowed to pass the quiz.

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