I have check and found that the Network QOS not working for VM outbound....it's working fine for Inbound only...

root@vm3:~# ./speedtest_cli.py

Retrieving speedtest.net configuration...

Retrieving speedtest.net server list...

Testing from (103.4.X.X)...

Selecting best server based on latency...

Hosted by HKIX1 (Hong Kong) [3.70 km]: 3.153 ms

Testing download speed........................................

Download: 1.95 Mbit/s

Testing upload speed..................................................

Upload: 143.09 Mbit/s