Limit read only grid entries due to query timeout

May I know how you are querying data and why you need all entries?

Could you share your gridField data parameter definition?

There is no direct way of doing this, but based on the query, we can optimize it.
Share more details.

Only way is to optimise the data query and batch the dataset. How is the 'data' parameter of the gridField() configured? Is it referencing a record directly or some rules? 

Please share some code snippets and/or screenshots with us - helpful in understanding your attempted setup.

I understand that there are sometimes some overriding requirements, but what I've found in cases like this is *usually* that a particular view (at least, it sounds like you're querying a view) is overloaded with the "trying to do everything at once" effect.

Why exactly?  What functionality does this fulfill, and how sure are you that querying "all entries" is the only way to do it?

Are you pulling the data from related records and using pagination as well?
If you can share query and parameter of your gridField , we can suggest better. Else, try optimize the code first. But make sure you are not pulling unwanted data too.

What kind of "query" is that?