Sorry for the late reply, here is the text:
Process CPU Private Bytes Working Set PID Description Company Name Verified Signer
System Idle Process 97.32 0 K 24 K 0
procexp64.exe 0.74 45,852 K 50,984 K 4564 Sysinternals Process Explorer Sysinternals - www.sysinternals.com (Verified) Microsoft Corporation
firefox.exe 0.33 226,440 K 294,896 K 8048 Firefox Mozilla Corporation (Verified) Mozilla Corporation
firefox.exe 0.31 292,996 K 384,924 K 4812 Firefox Mozilla Corporation (Verified) Mozilla Corporation
Steam.exe 0.23 99,544 K 141,284 K 6236 Steam Client Bootstrapper Valve Corporation (Verified) Valve
dwm.exe 0.22 52,300 K 38,948 K 1812 Desktop Window Manager Microsoft Corporation (Verified) Microsoft Windows
firefox.exe 0.17 58,404 K 78,380 K 7716 Firefox Mozilla Corporation (Verified) Mozilla Corporation
svchost.exe 0.15 18,696 K 15,012 K 404 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
Interrupts 0.14 0 K 0 K n/a Hardware Interrupts and DPCs
System 0.11 112 K 324 K 4
csrss.exe 0.10 4,980 K 63,848 K 660 Client Server Runtime Process Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 0.03 28,812 K 29,560 K 460 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
MBAMService.exe 0.03 148,580 K 154,756 K 1044 Malwarebytes Service Malwarebytes (Verified) Malwarebytes Corporation
firefox.exe 0.03 242,452 K 325,552 K 5304 Firefox Mozilla Corporation (Verified) Mozilla Corporation
csrss.exe 0.02 2,960 K 4,304 K 420 Client Server Runtime Process Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 0.01 28,188 K 17,340 K 144 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
LMS.exe 0.01 2,840 K 4,188 K 5348 Local Manageability Service Intel Corporation (Verified) Intel Corporation
svchost.exe 0.01 5,404 K 6,204 K 3604 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 0.01 5,876 K 7,576 K 868 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
AppleMobileDeviceService.exe 0.01 5,048 K 9,392 K 1332 MobileDeviceService Apple Inc. (Verified) Apple Inc.
explorer.exe 0.01 110,224 K 100,236 K 2036 Windows Explorer Microsoft Corporation (Verified) Microsoft Windows
steamwebhelper.exe < 0.01 28,460 K 68,456 K 2612 Steam Client WebHelper Valve Corporation (Verified) Valve
audiodg.exe < 0.01 23,852 K 22,360 K 4884 Windows Audio Device Graph Isolation Microsoft Corporation (Verified) Microsoft Windows
Skype.exe < 0.01 69,532 K 22,052 K 3672 Skype Skype Technologies S.A. (Verified) Skype Software Sarl
iPodService.exe < 0.01 2,776 K 5,208 K 4868 iPod Service Apple Inc. (Verified) Apple Inc.
SteamService.exe < 0.01 6,480 K 11,016 K 5092 Steam Client Service Valve Corporation (Verified) Valve
taskhost.exe < 0.01 13,956 K 11,564 K 1732 Host Process for Windows Tasks Microsoft Corporation (Verified) Microsoft Windows
svchost.exe < 0.01 65,580 K 26,092 K 2632 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
avguix.exe < 0.01 9,580 K 8,088 K 4508 AVG User Interface AVG Technologies CZ, s.r.o. (Verified) AVG Technologies CZ
msiexec.exe < 0.01 7,760 K 9,956 K 3908 Windows® installer Microsoft Corporation (Verified) Microsoft Windows
mbamtray.exe < 0.01 20,524 K 17,784 K 1404 Malwarebytes Tray Application Malwarebytes (Verified) Malwarebytes Corporation
svchost.exe < 0.01 13,740 K 16,376 K 440 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
SearchIndexer.exe < 0.01 25,876 K 16,784 K 3540 Microsoft Windows Search Indexer Microsoft Corporation (Verified) Microsoft Windows
svchost.exe < 0.01 155,124 K 155,616 K 284 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
lsass.exe < 0.01 5,076 K 9,288 K 720 Local Security Authority Process Microsoft Corporation (Verified) Microsoft Windows
iTunesHelper.exe < 0.01 5,852 K 7,908 K 3548 iTunesHelper Apple Inc. (Verified) Apple Inc.
firefox.exe < 0.01 191,656 K 184,872 K 2932 Firefox Mozilla Corporation (Verified) Mozilla Corporation
wuauclt.exe 2,812 K 5,280 K 5528 Windows Update Microsoft Corporation (Verified) Microsoft Windows Component Publisher
wmpnetwk.exe 5,276 K 3,812 K 2664 Windows Media Player Network Sharing Service Microsoft Corporation (Verified) Microsoft Windows
WmiPrvSE.exe 4,552 K 8,120 K 8116 WMI Provider Host Microsoft Corporation (Verified) Microsoft Windows
WmiPrvSE.exe 3,532 K 7,144 K 5948 WMI Provider Host Microsoft Corporation (Verified) Microsoft Windows
winlogon.exe 4,388 K 5,644 K 756 Windows Logon Application Microsoft Corporation (Verified) Microsoft Windows
wininit.exe 2,124 K 3,556 K 632 Windows Start-Up Application Microsoft Corporation (Verified) Microsoft Windows
Updater.exe 3,280 K 5,376 K 1656 Updater Popcorn Time (No signature was present in the subject) Popcorn Time
UNS.exe 3,564 K 4,544 K 2552 User Notification Service Intel Corporation (Verified) Intel Corporation
svchost.exe 17,124 K 16,620 K 1168 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 5,120 K 7,356 K 948 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 2,568 K 4,388 K 1616 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
steamwebhelper.exe 23,568 K 34,732 K 5140 Steam Client WebHelper Valve Corporation (Verified) Valve
steamwebhelper.exe 14,800 K 18,644 K 6828 Steam Client WebHelper Valve Corporation (Verified) Valve
steamwebhelper.exe 25,292 K 37,908 K 5472 Steam Client WebHelper Valve Corporation (Verified) Valve
steamwebhelper.exe 12,300 K 13,724 K 6492 Steam Client WebHelper Valve Corporation (Verified) Valve
spoolsv.exe 8,216 K 7,336 K 1136 Spooler SubSystem App Microsoft Corporation (Verified) Microsoft Windows
smss.exe 732 K 1,272 K 268 Windows Session Manager Microsoft Corporation (Verified) Microsoft Windows
services.exe 7,592 K 8,160 K 700 Services and Controller app Microsoft Corporation (Verified) Microsoft Windows
RAVCpl64.exe 10,060 K 6,956 K 1032 Realtek HD Audio Manager Realtek Semiconductor (Verified) Realtek Semiconductor Corp
procexp.exe 9,264 K 11,400 K 6012 Sysinternals Process Explorer Sysinternals - www.sysinternals.com (Verified) Microsoft Corporation
notepad.exe 2,564 K 7,564 K 3896 Notepad Microsoft Corporation (Verified) Microsoft Windows
mDNSResponder.exe 2,992 K 4,852 K 1452 Bonjour Service Apple Inc. (Verified) Apple Inc.
lsm.exe 3,176 K 3,944 K 728 Local Session Manager Service Microsoft Corporation (Verified) Microsoft Windows
jusched.exe 3,268 K 5,868 K 4500 Java Update Scheduler Oracle Corporation (Verified) Oracle America
jucheck.exe 6,108 K 7,436 K 2340 Java Update Checker Oracle Corporation (Verified) Oracle America
igfxpers.exe 4,948 K 7,684 K 3468 persistence Module Intel Corporation (Verified) Intel Corporation - pGFX
ICCProxy.exe 1,452 K 4,240 K 3704 Intel® Integrated Clock Controller Service - Intel® ICCS Intel Corporation (Verified) Intel Corporation
hkcmd.exe 3,948 K 4,672 K 3096 hkcmd Module Intel Corporation (Verified) Intel Corporation - pGFX
firefox.exe 51,852 K 53,492 K 7196 Firefox Mozilla Corporation (Verified) Mozilla Corporation
BBPrint.exe 2,632 K 3,344 K 3576 BBPrint Application Bluebeam Software, Inc. (Verified) Bluebeam Software
avgsvca.exe 8,244 K 11,848 K 1368 AVG Service Process AVG Technologies CZ, s.r.o. (Verified) AVG Technologies CZ
armsvc.exe 1,304 K 3,168 K 1232 Adobe Acrobat Update Service Adobe Systems Incorporated (Verified) Adobe Systems
AdobeARM.exe 4,252 K 7,852 K 4360 Adobe Reader and Acrobat Manager Adobe Systems Incorporated (Verified) Adobe Systems
In TCPVIEW, there seems to be nothing wrong. The only process having the highest sent bytes (1.2k) is "process". I feel like the real problem is the internet itself.