Why don’t you provide some details showing port #1 results and then results on other ports, and what’s plugged into those ports. Otherwise your question is unanswerable as written.
Doesn't matter what PC is used, only port #1 will finish the buffer bloat test, and it also doesn't matter what failed message pops up. I've tried everything it suggests to do
I have the same router and firmware. I've just run the test using each of the ports and there was no difference other than the normal variation from test to test.