re-render performance issue

[ghoshorn]

Hi, @guidone hope everything goes well!

Recently when I use the form, say about 100 fields, with half of them having a script. With empty defaultValues, the re-render is evidently slower(more than 5s and makes the browser hang) than the initial rendering.

Here I have a demo, on the top I have a button, which will do nothing but change a state and makes the page rerender. You can see the page got stucked for seconds and after a while you can finally see the clicking makes the selection button changed. Please refer to the demo below:

form-performance.mov.zip

[guidone]

I see the problem.

Questions:

• is the slowness happening only with empty defaultValues (this is ringing me a bell in the past while I was searching for a bug related to unintended re-renders)
• can you share the form (I understand you may not want to share it here, can you send it to [email protected]?)

[ghoshorn]

@guidone Hi, actually I have not yet tested the form with data, but I can share the form with you first, and will try it with data later and share the result with you.
Glad if this can help a little to find the bug, sent to your gmail ;-)