Excel Performance Problems

Fix Delayed Excel AutoFill and Copy Performance in WPS Office Spreadsheets

Huda QurayshiHuda Qurayshi Nov 13, 2026 869 views

Question details

The user needs to troubleshoot a one-second delay when copying cells or filling a number series in an Excel 2016 workbook opened in WPS Office Spreadsheets.

Fix Delayed Excel AutoFill and Copy Performance in WPS Office Spreadsheets
Product
WPS Office Spreadsheets
Device & OS
not provided
Scenario
The user is editing an Excel 2016 workbook, copying cell ranges or dragging AutoFill to complete a number series, and wants fill and copy actions to respond immediately.
Observed behavior
Copying cells or using AutoFill to fill a number series is delayed by about one second, especially in workbooks with formulas, conditional formatting, or a large used range.
Before you start

Open the affected workbook in WPS Office Spreadsheets and note whether it contains many formulas, conditional formatting rules, or a large empty area. Keep the Formulas tab available so you can switch calculation options quickly.

Solution 1Recommended

Switch Workbook Calculation to Manual to Isolate Recalculation Delay

Use this first when fills or copies are delayed and the workbook contains many formulas; Manual calculation stops automatic recalculation so you can test whether formulas or volatile functions cause the lag.

Automatic calculation can run a full recalculation after every copy or fill action. Setting calculation to Manual temporarily disables that behavior and helps identify whether recalculation is the main cause.

1
Open Calculation Options

Open the affected workbook in WPS Office Spreadsheets and click the Formulas tab on the ribbon.

2
Set calculation to Manual

Click Calculation Options in the Calculation group and select Manual.

3
Test AutoFill and copy

Select a cell or range, copy it, or drag the fill handle to complete a number series. Check whether the one-second delay disappears.

4
Return to Automatic calculation

After testing, click Formulas > Calculation Options > Automatic, then save the workbook to keep normal recalculation enabled.

Switch Workbook Calculation to Manual to Isolate Recalculation Delay
If the delay improves: Review formulas or volatile functions such as NOW, TODAY, OFFSET, INDIRECT, or RAND. Replace them where possible before returning to Automatic calculation.

Fix AutoFill Delays in WPS Office Spreadsheets

Open the same Excel 2016 workbook in WPS Office Spreadsheets, switch calculation to Manual, clean conditional formatting and unused ranges, and update WPS Office to reduce AutoFill and copy delays without rebuilding the file.

  1. 1. Open the Excel 2016 workbook: Download and install WPS Office, then open the affected .xlsx workbook in WPS Office Spreadsheets.
  2. 2. Set calculation to Manual: Click Formulas > Calculation Options > Manual, then test AutoFill and copy to see if the delay improves.
  3. 3. Clean formatting and used range: Click Home > Conditional Formatting > Manage Rules to delete unused rules, press Ctrl+End to find the last used cell, and delete extra rows and columns.
  4. 4. Return to Automatic and save: Click Formulas > Calculation Options > Automatic, then save the workbook as an Excel .xlsx file.
Reduces AutoFill and copy delays by controlling calculation and formattingOpens, edits, and saves Excel .xlsx workbooks with full Microsoft Office compatibilityFree, lightweight Office suite with a familiar spreadsheet interfaceAvoids Microsoft Excel 2016 repair or reinstall by using WPS Office as a smooth alternative
microsoft office alternative - wps office

Frequently Asked Questions

Why is Excel AutoFill so slow when filling a number series?

AutoFill can trigger automatic recalculation, especially with many formulas or volatile functions. In WPS Office Spreadsheets, switch to Formulas > Calculation Options > Manual and test. If the delay disappears, review formulas and conditional formatting.

How do I stop copy and paste from freezing for one second in Excel 2016?

Open the workbook in WPS Office Spreadsheets, set calculation to Manual under Formulas > Calculation Options, manage conditional formatting rules from Home > Conditional Formatting > Manage Rules, and remove unused rows and columns.

Can I use WPS Office to open an Excel 2016 workbook without losing formatting?

Yes. WPS Office Spreadsheets opens and saves .xlsx files with Excel formatting, formulas, and charts, so you can troubleshoot or continue working without rebuilding the file.

What is the shortcut to fill down in WPS Office Spreadsheets?

Select the range including the source cell and the cells below, then press Ctrl+D to fill down. You can also drag the fill handle to complete a number series.

When should I return Excel calculation to Automatic after testing?

Return to Automatic as soon as you finish testing so formulas update normally. Click Formulas > Calculation Options > Automatic in WPS Office Spreadsheets.