Has this topic been abandoned? I too am having this issue. I built a page template for a client to showcase breweries at an upcoming event. There are 14 subfields inside 124 repeater fields and that seems to be the limit the browser will handle. I have upped their max_input_vars to 6000 but still no dice. I don’t want to have to go back to them and say “Sorry that’s all it can handle.” If I had known this would happen I would have made the breweries into their post type and looped through them like that. Will this issue ever be resolved? Is there a way to show like 20 repeater fields and then paginate the rest in the admin area? Or do something similar to what was done here (http://sevenspark.com/wordpress/speeding-up-the-appearance-menus-screen-in-wordpress-3-6) for WP menus prior to 4.3?
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