The Grid performance worsens progressively with each subsequent edit operation. Please optimize that.
Test page: https://blazorrepl.telerik.com/mJuHFNbb17FpJu9b54
Click on a Price or Quantity cell to start edit mode and tab repetitively to observe the degradation.
The problem is compounded when more groups are added.
Removing grouping fixes the issue.
The problem appears to be related to grouping/aggregates.