# RPi 4 very slow to non existent ETH

**URL:** <https://forum.core-electronics.com.au/t/rpi-4-very-slow-to-non-existent-eth/14939>\
**Category:** Raspberry Pi\
**Created:** [24 August 2022 03:40 UTC](https://forum.core-electronics.com.au/t/rpi-4-very-slow-to-non-existent-eth/14939 "2022-08-24T03:40:44Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Liam](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/liam/32/3562_2.png) [@Liam](https://forum.core-electronics.com.au/u/Liam)\
**Post date:** [24 August 2022 06:25 UTC](https://forum.core-electronics.com.au/t/rpi-4-very-slow-to-non-existent-eth/14939/2 "2022-08-24T06:25:19Z")

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Hi Andrew,

I’m not the networking guru but might be able to get you started at least 🙂  
Other Makers report that doing the following may help:

- Removing as many USB and GPIO peripherals as possible
- Ensuring that the switch/router has identified that ethernet interface as a full gigabit connection
- Try flashing a new Pi OS instance onto a microSD card and testing from a fresh install

This topic touches on a few possible improvements with a successful outcome:

> [@Painfully Slow Raspberry Pi Zero W Internet Speeds](https://forum.core-electronics.com.au/t/painfully-slow-raspberry-pi-zero-w-internet-speeds/5602):
>
> Just configured my Raspberry Pi Zero W ordered on # 100139504. Loaded using Noobs and Raspian Image - no difference on Sandisk and Samsung micro SD cards. When doing a sudo apt-get upgrade it took over 30 minutes most of this downloading time. As an example a 220Mb file took over 10 minutes at about 300Kb/s. Trying to open YouTube on Chromium will sometimes time out and if it does connect it cannot playback video at the lowest resolution. Running [speedtest.net](http://speedtest.net/) gets between 1 and 3 Mb/sec on …

Are you able to paste in any speed test outputs? If they clamp at a distinct speed we might be able to determine whats causing issues there!  
Liam

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