internet connection speed capped in my ubuntu 22.04

There could be a few reasons for this issue. Here are some steps you can try to resolve the problem:

Check your Ethernet cable: Make sure your Ethernet cable is not damaged and is capable of supporting the full speed of your connection.

Check your network settings: Ensure that your network settings are configured correctly. Open the Settings application and navigate to Network. From there, select the Ethernet connection and check if the settings are correct.

Check your router settings: Make sure that your router is configured correctly to support high-speed connections. Check if there are any QoS (Quality of Service) settings enabled on your router, as this can sometimes limit your network speed.

Check your network driver: Ensure that your network driver is up-to-date and compatible with Ubuntu 22.04 LTS. You can check this by running the command "lspci -v" in the terminal to see the details of your network interface card.

Check for any network traffic: Sometimes other applications or processes can consume your network bandwidth. Use the "iftop" command in the terminal to monitor your network traffic and identify any applications or processes that may be using your bandwidth.

Contact your internet service provider: If none of the above steps resolve the issue, contact your internet service provider (ISP) and inform them about the problem. They may be able to provide further assistance in resolving the issue.

Hopefully, these steps will help you to resolve the issue and achieve the full speed of your internet connection on your Ubuntu PC.

i have added both output of lspci -v and iftop. also i assured that my internet connection and ethernet cable dont have any issue. i tested with another pc using same router, same port, same cable.

03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
 Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
 Flags: bus master, fast devsel, latency 0, IRQ 19
 I/O ports at 4000 [size=256]
 Memory at f0d04000 (64-bit, non-prefetchable) [size=4K]
 Memory at f0d00000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: r8169
 Kernel modules: r8169

04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
 Subsystem: Lenovo RTL8723BE PCIe Wireless Network Adapter
 Flags: bus master, fast devsel, latency 0, IRQ 16
 I/O ports at 3000 [size=256]
 Memory at f0c00000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: rtl8723be
 Kernel modules: rtl8723be

zahir@Home-PC:~$ iftop
interface: enp3s0
IP address is: 172.10.10.253
MAC address is: 28:d2:44:f3:40:90
pcap_open_live(enp3s0): enp3s0: You don't have permission to capture on that device (socket: Operation not permitted)
zahir@Home-PC:~$

 i assured that my internet connection and ethernet cable dont have any issue. i tested with another pc using same router, same port, same cable. was getting full 4-5 days ago when pc run with windows. for test i installed windows again and got full speed. but when same ubuntu its capped up to 50-52Mbps.

@Jmes Jony (jmesjony)

zahir@Home-PC:~$ ifconfig
enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet 172.10.10.253 netmask 255.255.255.0 broadcast 172.10.10.255
        inet6 fe80::49cd:897d:8f00:8d81 prefixlen 64 scopeid 0x20<link>
        ether 28:d2:44:f3:40:90 txqueuelen 1000 (Ethernet)
        RX packets 729143 bytes 866468554 (866.4 MB)
        RX errors 0 dropped 142 overruns 0 frame 0
        TX packets 295665 bytes 32552228 (32.5 MB)
        TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
        inet 127.0.0.1 netmask 255.0.0.0
        inet6 ::1 prefixlen 128 scopeid 0x10<host>
        loop txqueuelen 1000 (Local Loopback)
        RX packets 22606 bytes 6807545 (6.8 MB)
        RX errors 0 dropped 0 overruns 0 frame 0
        TX packets 22606 bytes 6807545 (6.8 MB)
        TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

zahir@Home-PC:~$

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