Hey @Pjk Ragavendhar. You should probably open a support ticket: 

https://help.miro.com/hc/en-us/articles/360020185799-How-to-contact-Miro-Support

@Pjk Ragavendhar -

Can you be more specific about the lagginess? Is this on boards, the dashboard or both? Is it on a specific board or all boards? Can you provide some info regarding the number of objects in a laggy board and how long it is taking to render?

You might want to review this article providing tips on improving board performance: https://help.miro.com/hc/en-us/articles/360013588560-Tips-to-improve-board-performance

Kiron