I am using as few switches as possible.
As I said the problem is intermittent and occurs randomly in the different categories (my last product was added about a week ago). For example I have my tanktop category containing 4 products, sometimes it only fetches 3 of them.
After clearing the cache I get alot of “Error getting articles. Please check Shop-ID, API and secret.” errors.
I did notice an improvement in performance after disabling Lazy load and setting the plugin to fetch 100 products per page (just to be sure it would get all of them)