How to improve performance, feel that the page loading is very lagging
0.41.1
Hi @beta
Since you're providing so little information, then it's difficult to say. Perhaps you're seeing this issue:
https://github.com/metabase/metabase/issues/18759 - upvote by clicking 
on the first post
You mean optimizing query logic, such as sql query logic, using indexes?
@beta I don't understand what you mean. If you want to optimize your queries, then you can do that:
https://www.metabase.com/learn/administration/making-dashboards-faster.html
https://www.metabase.com/learn/sql-questions/sql-best-practices.html
If you are experiencing a specific problem, then include "Diagnostic Info" from Admin > Troubleshooting (like I always ask for, and I'm getting tired of continuously having to ask for it from you).
And then include logs, which shows the problem. And if you are comparing with a previous version, then include those logs too, so you can easily show the problem.