Hi Jags,

Check out this post for techniques on how to improve forms performance.  20 person picker controls is definitely going to add some overhead to your forms loading time.

Also you might want to check that your Nintex data centre is the same as your o365 data centre.  You can check which Nintex data centre you are using via your Nintex gallery page - go to the about section where it tells you your tenant ID.  It will also specify which data centre you're using.  If it's different to your o365 data centre, you can request that it is moved which will help performance.

Cheers,

Chris

Hi Jags s,

   Here are few parameters which affects the performace of the Nintex Forms. To be more precide please follow Chris Ben‌ post. it helps.

 Some things that effect performance are:

1. Query Lookups
2. Number of controls
3. Custom CSS
4. Custom Javascript
5. Number Validations or Rules

‌ ‌ ‌‌ ‌

Thanks 

Bashya Rajan A