How to optimize work with an array?

Question

JavaScript

You need to write the optimal code (in terms of speed), which will return the modified array according to the following parameters.
Given:
- an array of n elements
Input:
- list (array)
- startIndex (where to get it from)
- endIndex (where to put it)
Output:
- modified array, where startIndex is replaced by endIndex

There is such code, but it sometimes takes about 2 seconds ( which is very slow, despite the fact that there are no more than 100 elements (just objects without arrays and objects inside, only key - value) in the array)

const reorder = (list, startIndex, endIndex) => {
    const result = Array.from(list);
    const [removed] = result.splice(startIndex, 1);
    result.splice(endIndex, 0, removed);
  
    return result;
  }