I received Buzz Saw in 2016. It bloomed for me the next year but then skipped 2018 (very rainy year). It did bloom for me last year. The flowers always appear white to me with a nice toothy yellow border. However, I can't say it has been a good bloomer. The first year it bloomed I got four flowers and last year I had five. BS only bloomed from July 14-July 26 last year. This surprised me since most of my daylilies bloomed very well in 2019 due to the previous year's rainfall. It is planted in a small bed with other daylilies in a good location so I don't think that is the problem.
I'm not optimistic that it will do a whole lot better in the future. I also have Marque Moon which is very similar. That cultivar is far superior in my opinion and is one that I would happily recommend. Maybe Buzz Saw does better in a warmer climate?