@lovaki
You mentioned in Post #7 that only your PC was affected.
So my thought is that the culprit is your PC and I suspect a configuration setting.
You can gather quite a bit more information about the problem especially if you have other wired PCs without the wired slowness problem.
On one of those PC's open Powershell (as admin)
Run
Get-NetIPConfiguration -Detailed
You can copy and paste the bold font above and paste it in after the PS> prompt.
Here is what it looks like on my PC:
PS C:\WINDOWS\system32> Get-NetIPConfiguration -Detailed
Next run
Get-NetAdapterAdvancedProperty
Again, from my computer:
PS C:\WINDOWS\system32> Get-NetAdapterAdvancedProperty
Use a screen capture to print out the results
Do the same on your slow PC
Compare the results and look for differences.
Get cmdlets do not make any changes. We are using them only to Get information.
= = = =
Here are the full results from my PC - with personally revealing parts redacted (XXXXXX = Network name and YYYYYY = Computer Name):
PS C:\WINDOWS\system32> Get-NetAdapterAdvancedProperty
Name DisplayName DisplayValue RegistryKeyword RegistryValue
---- ----------- ------------ --------------- -------------
XXXXXX Flow Control Rx & Tx Enabled *FlowControl {3}
XXXXXX Interrupt Moderation Enabled *InterruptMo... {1}
XXXXXX IPv4 Checksum Offload Rx & Tx Enabled *IPChecksumO... {3}
XXXXXX Jumbo Frame Disabled *JumboPacket {1514}
XXXXXX Large Send Offload v2 (IPv4) Enabled *LsoV2IPv4 {1}
XXXXXX Large Send Offload v2 (IPv6) Enabled *LsoV2IPv6 {1}
XXXXXX ARP Offload Enabled *PMARPOffload {1}
XXXXXX NS Offload Enabled *PMNSOffload {1}
XXXXXX Priority & VLAN Priority & VLAN Enabled *PriorityVla... {3}
XXXXXX Receive Buffers 512 *ReceiveBuffers {512}
XXXXXX Recv Segment Coalescing (IPv4) Disabled *RscIPv4 {0}
XXXXXX Recv Segment Coalescing (IPv6) Disabled *RscIPv6 {0}
XXXXXX Speed & Duplex Auto Negotiation *SpeedDuplex {0}
XXXXXX TCP Checksum Offload (IPv4) Rx & Tx Enabled *TCPChecksum... {3}
XXXXXX TCP Checksum Offload (IPv6) Rx & Tx Enabled *TCPChecksum... {3}
XXXXXX Transmit Buffers 128 *TransmitBuf... {128}
XXXXXX UDP Checksum Offload (IPv4) Rx & Tx Enabled *UDPChecksum... {3}
XXXXXX UDP Checksum Offload (IPv6) Rx & Tx Enabled *UDPChecksum... {3}
XXXXXX Wake on Magic Packet Enabled *WakeOnMagic... {1}
XXXXXX Wake on pattern match Enabled *WakeOnPattern {1}
XXXXXX Network Address -- NetworkAddress {--}
XXXXXX VLAN ID 0 RegVlanid {0}
XXXXXX Shutdown Wake-On-Lan Enabled S5WakeOnLan {1}
XXXXXX WOL & Shutdown Link Speed 10 Mbps First WolShutdownL... {0}
PS C:\WINDOWS\system32> Get-NetIPConfiguration -Detailed
ComputerName : YYYYYY
InterfaceAlias : XXXXXXX
InterfaceIndex : 12
InterfaceDescription : Realtek PCIe GbE Family Controller
NetCompartment.CompartmentId : 1
NetCompartment.CompartmentDescription : Default Compartment
NetAdapter.LinkLayerAddress : 8C-EC-4B-7E-7E-D4
NetAdapter.Status : Up
NetProfile.Name : Network
NetProfile.NetworkCategory : Private
NetProfile.IPv6Connectivity : NoTraffic
NetProfile.IPv4Connectivity : Internet
IPv4Address : 192.168.1.201
IPv4DefaultGateway : 192.168.1.1
NetIPv4Interface.NlMTU : 1500
NetIPv4Interface.DHCP : Enabled
DNSServer : 8.8.8.8
8.8.4.4
ComputerName : YYYYYY
InterfaceAlias : Bluetooth Network Connection
InterfaceIndex : 15
InterfaceDescription : Bluetooth Device (Personal Area Network)
NetCompartment.CompartmentId : 1
NetCompartment.CompartmentDescription : Default Compartment
NetAdapter.LinkLayerAddress : 74-40-BB-D5-2D-BE
NetAdapter.Status : Disconnected
Actual display screen presentation should be in neat, aligned columns.
Take your time, google the Get cmdlets as you wish, start simple, do not be tempted into making any immediate changes.
Objective being to discover the difference between the slow PC and a faster PC.
Post what you find.