QB Issue Resolution:

The POS v 11 uses about 4 times the system resources of the older POS versions. The one holding the data should have at least 6-8GB ram, and the clients 4gb. If you have 4 licenses, you can install the same license on the server and 1 register. Only one of the two could be open at a time.

Resolution for Issue 'POS speed and performance issues. We recently upgraded from POS v8 to V11. We have a current inventory list of about 60,000 items and searches seem to be so slow.' available: Yes (Solved).
Source: Intuit Community forum.

POS speed and performance issues. We recently upgraded from POS v8 to V11. We have a current inventory list of about 60,000 items and searches seem to be so slow.: this 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 issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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