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Problems with [Intel I218-V] Ethernet adapter



long story short, I am having abnormal disconnection + slow speed with [Intel I218-V] Ethernet adapter.

and I'm pretty sure there is problem with [Intel I218-V] based on reasons I stated bottom.

I've built my PC last year around this time, and my current build is

OS- Windows 10 64bit

CPU- [intel i7 5820k]

MoBo- [Asus sabertooth X99]

RAM - [32GB Gskill trident 3200]

GPU -[MSI RX480 4GB]

and I use [Netgear powerline] 1200 for my Ethernet connection

Now, here is problem I found out recently.

My MoBo [Asus sabertooth X99] has 2 Ethernet adapter which are [Intel® I218V] and [Realtek® 8111GR]

When I first built this PC, I do not remember how fast the internet speed was, but I believe [Intel® I218V] acted little faster than [Realtek® 8111GR],

So I only used [Intel® I218V] adapter.

Internet worked fine, but every day, around specific time (4-6 AM EST), I lost connection for about 5 min.

First, I thought it was problem with my ISP, because I heard they reset things sometime, but it happen too often and when I contacted my ISP, they said there seems no abnormal disconnections around my area. and ISP wasn't the problem because of my second concern.

Second, I was expecting that my old router causing the random disconnection, but then, whenever this disconnection happens in my PC, Wi-Fi from my smartphone which was connected to same router worked just fine.

Third, I thought it was problem with Powerline from Netgear. but for this, I have no idea to figure out what and where the problem would be.

could be device failure, or my house resets power once a while, I really don't know.

I mean, it was disconnected only for like 5 min-ish, yet it bothers the hell out of me since it almost happen everyday.

and not only around 4-6 AM, random disconnection happened as well.

It happened yesterday as well around same time (4-6AM). my WiFi was still working, and I got little sick of it, so I took out my Ethernet cable from [Intel® I218V] and connected to [Realtek® 8111GR].

Internet worked right away which was fine.

but I felt somethings little different, then I noticed things loads quicker than before in internet browser.

I reconnected my Ethernet cable into [Intel® I218V].

internet worked fine, so I ran internet speed test.

result was

Down : 10mbps (highest 20mbps maybe)

Up : under 5mbps

when I first built this PC, I remember that it was way higher (40-50mbps)

because I was happy with improvement from my super old PC which was only getting 20mbps.

I pulled cabled again and connected it into [Realtek® 8111GR] then ran the speed test

it got 50mbps download and it was stable.

I do not know what happened and what changed things past 1 year.

anyone having similar problem? know any solution to bring [Intel® I218V] back?

I've tried some different thing from my research, mostly simple/easy modifications.

like changing power saving option.

delete/reinstalling latest driver.

and seems like it didn't do anything to it.

My question is can these Ethernet adapters wear-off? or get damaged from power via Ethernet cable?

+in addition, even though down speed from test was 10mbps for [Intel® I218V] and 50mbps for [Realtek® 8111GR].

when I try download actual things via applications or internet browser,(for example, 10-20GB sized games from Steam) both adapter got pretty much similar download speed (6.8MB/s max).

but still, picture, video from youtube, and websites load much much faster with [Realtek® 8111GR].

+in Advance option what kind of setting might help?

here is my current setting

Adaptive Inter-Frame Spacing - Disabled

Enable PME - Enabled

Enregy Efficient Ethernet - Enabled

Flow Control - Rx & Tx Enabled

Gigabit Master Slave Mode - Auto Detect

Interrupt Moderation - Enabled

Interrupt Moderation Rate - Adaptive

IPv4 Checksum Offload - Rx & Tx Enabled

Jumbo Packet - Disabled

Large Send Offload V2(IPv4) - Enabled

Large Send Offload V2(IPv6) - Enabled

Legacy Switch compatibility mode - Disabled

Locally Administered Address - not present

Log Link Event - Enabled

Maximum Number of RSS Queues - 2 Queues

Packet Priority & VLAN - Packet Priority & VLAN Enabled

Protocol ARP Offload - Enabled

Protocol NS Offload - Enabled

Receive Buffers - 256

Receive Side Scailing - Enabled

Reduce Speed On power down - Enabled

Speed & Duplex - Auto Negotiation

System Power Saver - Disabled

TCP checksum Offload(IPv4) - Rx & Tx Enabled

TCP checksum Offload(IPv6) - Rx & Tx Enabled

Transmit Buffers - 512

UDP checksum Offload(IPv4) - Rx & Tx Enabled

UDP checksum Offload(IPv6) - Rx & Tx Enabled

Wait for Link - Auto Detect

Wake on Link Setting - Disabled

Wake on Magic Packet - Enabled

Wake on Pattern Match - Enabled

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