Yes I do. I believe it is because of this (I am sure most of you can relate, lol): 1. Start a sentence 2. Immediately realize that I will stutter on word number XXX in that sentence 3. Spend the time reaching that word trying to restructure the sentence or find a word to replace it with. That last part requires a little more brainpower for my second language - especially since step 2 and 3 are usually done between 0,5 and 1 second. As a result I usually stutter a little more when I'm not speaking my native language.