improvements

```
PROVIDER=Fastweb
TEST_SERVER_HOST=speedtest.uania.cloud:8080
TEST_SERVER_DISTANCE=133.61
LATENCY=9
JITTER=0
DOWNLOAD_SPEED=110.48
UPLOAD_SPEED=21.62
```
Google Chrome Speed test says
90Mbps / 18Mbps

Time to test is too long.
Need parameter for define time/byte