Recommended test file size for speed testing:
If your bandwidth is lower than 1Mbps, use 1MB. 2Mbps - 10Mbps use 10MB, 10Mbps - 20Mbps use 35MB, 20Mbps & above  use: 100MB test option

1MB test option should not be used for testing services above 700kbps bandwidth

Please note that these tests will consume your monthly data capacity.