Both of you that are having same problem have a timing issue with your flasher. You can’t fix it yourself. If it gets to bad it will lock up. It won’t effect the performance much but it is annoying. When it starts locking up, it will need to be fixed obviously.
If you want to test your timing just hit the zoom button and see how the two marks line up, they should be perfectly lined up, up and down. Yours will be a couple degrees to the right or left I bet. Just a hunch 