Docs: Update troubleshoot-queries.md (#27078)

* Update troubleshoot-queries.md

* Update troubleshoot-queries.md

docs/sources/troubleshooting/troubleshoot-queries.md

@@ -11,7 +11,7 @@ weight = 400
 
 
 This page provides information to solve common dashboard problems.
 This page provides information to solve common dashboard problems.
 
 
-### I get different results when I rearrange my functions
+## I get different results when I rearrange my functions
 
 
 Function order is very important. Just like in math, the order that you place your functions can affect the result.
 Function order is very important. Just like in math, the order that you place your functions can affect the result.
 
 
@@ -22,3 +22,10 @@ like a bug or visualization issue in Grafana, it is almost always a problem with
 the data source response. Start by inspecting your panel query and response.
 the data source response. Start by inspecting your panel query and response.
 
 
 For more information, refer to [Inspect a panel]({{< relref "../panels/inspect-panel.md" >}}).
 For more information, refer to [Inspect a panel]({{< relref "../panels/inspect-panel.md" >}}).
+
+## My query is slow
+
+How many data points is your query returning? A query that returns lots of data points will be slow. Try this:
+- In **Query options**, limit the **Max data points** returned.
+- In **Query options**, increase the **Min interval** time.
+- In your query, use a `group by` function.