The plugin worked great but introduced latency. It was really easy to use and implement. We used four textfields within a product and it took between 6 to 10 seconds to load the product. We tested this across several computers in different location in the world and we confirmed the latency. Subsequent product loads were efficient within the same session. It was possible to submit a product order prior to the textfields appearing. We had to introduce code to prevent ordering prior loading of the textfields to prevent fast ordering.
We have updated the Shopify API a few days ago to reduce loading times. With the new Shopify GraphQL API, the problem should be almost solved.
Thanks for any further ideas. For any issues, our team is available to provide free and customized solutions to make everything work smoothly.