Slow download speed fast upload on Ethernet. - Microsoft Community

i'm having problem how internet functioning correctly on windows 10 desktop computer. download speed slow while upload speeds seems unaffected. problem physical ethernet link, , wireless seems working fine.

speed test (ethernet):

http://beta.speedtest.net/result/6438998402

i using cat 6 ethernet cord connect computer routers: https://www.amazon.com/gp/product/b00wd017bg/ref=oh_aui_detailpage_o00_s00?ie=utf8&psc=1.

this started when moved houses week ago. in new house there 2 separate isps 2 separate routers. 1 comcast xfinity service, , other 1 our city internet, nextlite, uses optic fiber. of tests have been conducted while connected nextlight fiber internet, problem consistent while using either. on laptop if disable wireless , connect same cable using desktop, download speed supposed @ 400mbps. ethernet cable seems work fine. there number of other computers on router connected both via ethernet , wireless, router , isp not appear problem. yesterday installed clean updated version of windows 10 on brand new hard drive, has had no impact on problem @ all. 

given cable/router fine, hard drive brand new, , os fresh install, came conclusion part mother board. having hard time believing though, upload fast should be, computer worked fine @ old house, , every other aspect of machine working great. after googling extensively did find temporary fix. downloaded , ran "tcp optomizer" from: https://www.speedguide.net/downloads.php. when run program, set use "optimal" settings, , restart computer ethernet connection starts working great again. problem lasts couple of hours , lose of speed. leads me believe problem lies in default driver settings on os, , how getting changed every often. 

i did little testing try figure out going on. if leave computer alone half day after performing fix (computer may sleeps not turn off), things go how , problem comes back. if disconnect ethernet , plug other router, problem comes immediately. if plug router working, no longer works , need fix again. if run optimizer must restart before speeds back, running alone not fix (the optimizer give  warning changes active on restart). restarting computer again after have run optimizer , restarted not cause problems , fix still working. during of tests have run optimizer admin permissions.

when running optimizer gives window telling of settings changing. looking through them, 3 options changed set @ previously. 

checksum offload none->enabled

netadapterrsc disabled->enabled

enabledca disabled->enabled

changing these seems solve problem entirely, doesn't last. there way can change these permanently, or there different solution wont stop working every few hours? appreciated, thanks!

here computer specs got off of "system information":

item value
os name microsoft windows 10 home
version 10.0.15063 build 15063
other os description not available
os manufacturer microsoft corporation
system manufacturer asus
system model all series
system type x64-based pc
system sku all
processor intel(r) core(tm) i7-4770k cpu @ 3.50ghz, 3501 mhz, 4 core(s), 8 logical processor(s)
bios version/date american megatrends inc. 0508, 5/16/2014
smbios version 2.8
embedded controller version 255.255
bios mode legacy
baseboard manufacturer asustek computer inc.
baseboard model not available
baseboard name base board
platform role desktop
pcr7 configuration binding not possible
windows directory c:\windows
system directory c:\windows\system32
boot device \device\harddiskvolume5
locale united states
hardware abstraction layer version = "10.0.15063.0"
installed physical memory (ram) 32.0 gb
total physical memory 31.9 gb
available physical memory 24.6 gb
total virtual memory 36.9 gb
available virtual memory 28.7 gb
page file space 5.00 gb
page file c:\pagefile.sys

hi


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may try test other websites , check results website experiencing slow download speed.

meanwhile, kindly click on link , find post created santos_rai troubleshoot network , incoming internet connection.

kindly post , share result.

Windows / Windows 10 / Network & internet / PC