This is a timely reminder to take multiple shots of LED Christmas lights. The difference in look can be dramatic.
These shots were 1/3 sec apart (3fps apart) at 1/125. I can see the flicker in the EVF of my Fujifilm X cameras which clued me in that I should test this.
Of course, if you shoot much slower, this probably goes away since the flicker is probably fluctuating at 60 cycles/sec in the US (because power is delivered at 60 Hz in the US). Probably mostly gone at 1/30 and barely noticeable at 1/15th.