Hi @Ismail Cassiem ,
According to your question, are you trying to improve Excel's Cube Performance? If yes, please refer to Improving Excel's Cube Performance.
And also, you could use Excel 2016 to get faster OLAP PivotTables. Please refer to Faster OLAP PivotTables in Excel 2016 and Excel 2016 PivotTable MDX Changes Lead To Big Query Performance Gains.
Best regards,
Carrin
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