QB Issue Resolution:

It is possible that a hardware driver may be to blame. In the article Resolve Point of Sale errors in Windows 10, there is a section that includes more information about this.  It may also be worthwhile to reach out directly to support for an issue like this one.  the phone number for QuickBooks Point of Sale is 1-800-348-0254.

Resolution for Issue 'Quickbooks POS freezes' available: Yes (Solved).
Source: Intuit Community forum.

Quickbooks POS freezes: 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.

Support for POS freezes
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Error Recovery for POS freezes [Canada]
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Additional Support Options: