My slideshow on Brooklyn theme is sticking on the 2nd slide, on both mobile and PC. I've tried using Chrome and Safari browsers and it's the same on both.
Occasionally it does move beyond the 2nd slide but will stick eventually.
On the preview section, within the Shopify customise section, it shows as working fine.
I gather this is a recent issue with no resolution yet?
My site is www.thenorthcurve.com.
Looks to be working fine on Chrome for me. Make sure you've not accidentally given the slideshow hover focus, as that pauses the slideshow.
Also, fyi - you have a typo on your button on 'DG-10' slide
Glad you've got to the bottom of it. Given that it didn't happen for us, I'd hazard that you had a weird conflict or bad cache, and it's not going to be seen by new customers to your store.