I did and unfortunately it was worse than I expected. Throughout the 20 minutes or so of the speaking exam I was not able to achieve any kind of flow. I get nervous speaking english at places where I feel I'm being judged on my english skills so I wasn't in the best state before the interview either. I did disclose my stutter, possibly because of which, the female examiner was quite patient with me. I kept on trying to power through the stutters but I definitely should have spoken as slowly as I could, even if I would have sounded like a kid (trust me it would have been much better than how I was speaking). I was able to convince the examiner of my vocabulary, grammar, and improvisation (they're mostly testing your improvisation) so that saved me from a failing score. I scored 6.5 in the speaking exam which is bad but I couldn't believe it given how honestly terrible my fluency was on that day. I'd recommend that you focus on a few core tips for the exam, assuming you haven't given it yet, such as an exaggeratedly slow pace, delivering one word at a time, or prolonging the words, etc. depending on how you deal with your stutter. Powering through the stutters does not help at all imo. I may not be the best example to follow but regardless I hope that you do well and for the longer run, make a positive step in conquering your stutter.