The Performance Test can be accessed in Runtime > Runtime Diagnostics > Run Tools > "Performance Test"

The code snippet below is executed when this feature runs. It performs multiple memory allocations within a repetitive loop, creating and filling large blocks of data in each iteration to measure the Designer performance.

DateTime t = DateTime.Now;

for (int x = 0; x < 100; x++)
{
	int size = 1024 * 1024;

	int[] memAlloc = new int[size];

	for (int i = 0; i < size; i++)
	{
		memAlloc[i] = i;
	}

}

result = DateTime.Now - t;

The expected result value is under 300 ms.

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