Thanks for letting me know. When did it start? I made a change a couple of weeks ago when I tucked the sidebar filters away into a floating panel to make the site a little more usable on small screens, I wonder if that somehow affected the iPhone experience. Also, it would be good if you could check on other iPhones and report what you found. Thanks.
Sorry just saw this now. It started when the side bar changed to a drop-down. I'll see if I can snag an iPhone 7 to test the site and report back.
Good to know that the flickering effect was brought on by the sidebar change. I'll see what I can do about it. Thanks.
Doesn't stutter on an iPhone 7. I think the stuttering was because my phone 6s was zero on storage space at the time.
Good to know, thank you for reporting back!