Windows 10: Service Host: Network service consuming HUGE amounts of data

Service Host: Network service is hogging all of my bandwidth. I have tried every suggestion I could find on google, to no avail. All of my updates are off and bandwidth limited. Windows 10 is up to dateConnection set to metered.Background Intelligent Transfer is disabledDownloads from other PC's is off.Etc.

:)

 

SYSTEM is consuming huge amount of data on internet

Good Afternoon!

Recently, I bought a second hand laptop with Windows 10 pre-installed to it. Here are some details regarding my OS:

Edition: Windows 10 Enterprise
Version: 1703
OS Build: 15063.11
System Type: 64-bit operating system, x64-based processor

I noticed however, that the laptop is consuming huge amount of bandwidth and data on our internet (Ethernet indicator blinks rapidly). Then I tried checking the data usage:





However, after a minute or two, I tried checking again the data usage (I closed the setting and re-opened it again)





Please note that I'm not running any application as of now (except Microsoft Edge). Then I tried turning off the internet connection (by enabling airplane mode). Then I checked for the data usage again. The "SYSTEM" already consumed 2 MB of data even if on airplane mode.

I tried checking if there are updates available:





I also tried checking for application updates from Microsoft Store. I paused all the download and updates:





I disabled background apps but still the "SYSTEM" consumes considerably large amount of bandwidth and data:





My friend does have a laptop with Windows 10 version 1803. Her laptop doesn't eat bandwidth like mine.

So my question is:
1. What is the "SYSTEM" process that eats my internet bandwidth and data?
2. How do you stop it from consuming my internet bandwidth?

 

Service host tasks consuming large amount of processor

On what appears to be every other boot of my computer, I find that three service host tasks consume a significant amount of CPU cycles.



If I let the computer sit, untouched, for 10-15 minutes, these three tasks remain the greatest consumers of cpu time. If I reboot, however, they stop being cpu hogs:



What surprises me is that I can reproduce this behavior by simply rebooting my computer, at which point the three service host tasks will resume their place as top CPU users.

I am looking for suggestions on how to troubleshoot this issue.

 

Service Host: Local Service consuming all availible physical memory at login

I have a laptop with 8.0 Gb of memory, but I have noticed after login while the desktop is loading up all the way the SVCHOST.exe entry for Local Service consumes almost all my memory available, growing to 4Gb in size. but after everything settles down,
and everything is loaded up (startup programs, etc.) the size used by the process shrinks down to around 11.0 Mb. I have watched it during this activity and 7.9 Gb gets consumed in total before it starts to settle down. normal amount of memory consumed by
the system (at idle on the desktop) is around 3.2 Gb with 4.6Gb available. Is it normal for so much memory to be consumed after logging into windows?

Processes controlled by Service Host: Local Service

COM+ Event System

Connected Device Platform

Diagnostic Service Host

Function Discovery Provider Host

Network List Service

Network Store Interface Service

Windows Font Cache Service

Windows License Manager Service

WinHTTP Web Proxy Auto-Discovery Service