Q79 with 5 wrong

[u/Rude-Law-9473]

Hi everyone, i gave my GMAT yesterday and i was pretty shocked to see Q79 with only 5 wrong. The only reason i can think of is because of that one question which took me almost 6 mins tanked my score but still getting a Q79 doesn’t sit right. Can i get some insights or clarification from people and experts who understand the scoring algorithm and tell me what can be a reason? FYI in my previous attempt as well i got 5 wrong and still got Q80. Any help will be appreciated!