Excel Performance Problems

How to Optimize Excel VBA Chart Creation for Better Performance

John Wilson Oct 19, 2026 868 views

Question details

The user wants to improve Excel stability and reduce loading times when using VBA macros to create and manipulate charts.

How to Optimize Excel VBA Chart Creation and Improve Performance

Product: Microsoft Excel
Device & OS: not provided
Scenario: Running VBA macros to automatically generate, format, or update multiple charts within a workbook.
Observed behavior: The workbook becomes unstable, lags significantly, or experiences very slow loading times when executing the macro to create charts.

Before you start

Before modifying your VBA code, review how many charts are actively needed at one time. Sometimes replacing hundreds of static charts with a single dynamic interactive chart is the best performance fix.

Solution 1Recommended

Optimize VBA Code Using Application Settings and Object Variables

Speed up chart generation by disabling background updates, using With blocks, and explicitly defining object variables.

Slow performance often results from Excel trying to redraw the screen every time a chart property changes in the macro. By temporarily pausing these application-level updates and streamlining object references, you can drastically reduce macro execution time.

Disable Screen Updating and Events

At the very beginning of your macro, add the lines `Application.ScreenUpdating = False` and `Application.EnableEvents = False`. This prevents Excel from rendering visual changes until the script completes.

Define Explicit Variables

Use clearly defined worksheet and range variables to avoid repeatedly referencing the workbook. For example, use `Dim wsData As Worksheet` and `Set wsData = Worksheets("Data")`.

Group Properties in a With Block

When formatting your chart, wrap the properties inside a single `With cht.Chart` block. This stops VBA from constantly re-evaluating the chart object in memory for every title, axis, or color change.

Restore Application Settings

Ensure you turn the settings back on at the end of your script or within an error-handling block by adding `Application.ScreenUpdating = True` and `Application.EnableEvents = True`.

Pro Tip: Always include an error handler (e.g., `On Error GoTo ErrorHandler`) that routes to the cleanup section, ensuring your screen updating is turned back on even if the macro fails.

Solution 2

Reuse Existing Chart Objects Instead of Adding New Ones

Continuously generating new charts without deleting old ones causes severe memory bloat. Reusing existing charts improves long-term performance.

Optimize Data Visualization and Macros with WPS Spreadsheet

WPS Office offers robust support for Excel macros (VBA) and handles large datasets efficiently. It is a lightweight and highly compatible tool for managing complex data visualizations without the lag.

1. Open Your Macro Workbook: Launch WPS Spreadsheet and open your existing macro-enabled workbook (.xlsm).
2. Access the Developer Tools: Navigate to the 'Developer' tab on the ribbon and click 'Visual Basic' or 'Macros' to open the VBA editor.
3. Apply Optimizations: Implement the suggested optimizations, such as turning off Screen Updating, and execute your macro to enjoy faster chart rendering.

Fully compatible with Microsoft Excel formats (.xlsx, .xlsm) and VBA macros.Lightweight installation ensuring faster startup and smoother performance during script execution.Built-in advanced chart tools for effortless and dynamic data visualization.Free to use with an intuitive interface that requires no learning curve.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel crash when creating charts with VBA?

Excel may crash if the macro attempts to create hundreds of charts simultaneously, fails to clear memory by deleting old objects, or rapidly changes properties without disabling screen updating first.

What is the most efficient way to format a VBA chart?

The most efficient method is using a `With` block (e.g., `With cht.Chart`). This ensures VBA accesses the chart object only once in memory while applying multiple formatting properties like titles, labels, and colors.

Should I use Chart Sheets or embedded ChartObjects for better performance?

Embedded ChartObjects (charts placed directly on a worksheet) are typically preferred for dashboards. However, if you are plotting an extremely large number of data points, creating a dedicated Chart Sheet may render slightly faster. Ultimately, minimizing the total number of charts provides the best performance boost.

Excel & Data Problems