You can check on the links below to improve/manage QuickBooks Desktop performance issues:
Resolution for 'after installing issue: 'my computer is slow after installing upgrading to Desk Top 2017' available: Yes.
The after installing issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the after installing issue yourself by looking for a resolution described in the article. If it is a complex after installing issue or you are unable to solve the issue, you may contact us by clicking here or by using other after installing support options.
For more information about resolving issues related to after installing in Quickbooks/QBO or to get support for the issue 'my computer is slow after installing upgrading to Desk Top 2017', click the link below: