Hello. Just few days ago faced problem. I am using big form with 50+ nested fields and when I type, - it very slow. FastField doesn't help. Developers of Formik working on next version to fix this problem(unnecessary re-renders). There is issue with Formik in GitHub github.com/formium/formik/issues/342
For me I decided to try react-hook-form because heard that it has better performance with large forms(it uses uncontrolled components, and has much less rerenders).
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Hello. Just few days ago faced problem. I am using big form with 50+ nested fields and when I type, - it very slow. FastField doesn't help. Developers of Formik working on next version to fix this problem(unnecessary re-renders). There is issue with Formik in GitHub github.com/formium/formik/issues/342
For me I decided to try react-hook-form because heard that it has better performance with large forms(it uses uncontrolled components, and has much less rerenders).