Incorrect speedtest result

[buscseik]

The script only 30mbps DL and 10 mbps UL.
Speedtest.net says 450 DL/75 UL.

When I monitored the test together with the network traffic on Task manager/Performance/Ethernet,
I have noticed once the script still "waiting" to complete to DL test when the task manager says has no traffic for seconds.

Retrieving configuration...
Testing from Virgin Media (46.7.19.181)
Retrieving server list...
Selecting best server...
Hosted by Magnet Networks [12.66284 km] (12 ms)
Testing download speed...
Download: 33.59 Mbps
Testing upload speed...
Upload: 9.81 Mbps
Tests Completed

[originaluko]

Currently the largest upload / download file size that can be set is 30 MB. On high bandwidth connections this isn't large enough to calculate an accurate speed. In a future release I'll be looking at changing from a set upload / download size to a variable size. Hopefully allowing more time to calculate an accurate speed with high bandwidth connections.

[buscseik]

I assume not that the only problem.
You measure the running time of async process. When I monitored the traffic on the interface, the traffic was already stopped clearly about 5-10 sec when the async process completed.