There are other steps you can do to improve your QuickBooks’ performance. The most common ones are explained in this article: https://quickbooks.intuit.com/community/Help-Articles/Resolve-QuickBooks-Desktop-performance-issues-...
Also, you might want to start a new company file. Just export lists, such as customers, vendors, and Chart of Accounts from the old file to the new file. Though you won’t be able to transfer transactions from the old to the new file.
Lastly, there are websites or third party apps available online that can help you condense your company file.
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