My internet speed is very low

I installed fedora 39 and my internet speed is very low, although on Windows it is 10-15 times faster. The Internet is connected as follows: I distribute Wi-Fi in the hall, in my room there is a router that receives the signal and transmits it via cable to the PC

What’s your machine’s wlan chipset?

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I didn’t quite understand the question. My router model is TL-WR740N

No, I meant the chipset / wifi card of your PC. The reason I am asking is because your wifi card’s driver or firmware may have an issue…

Do you know how to find out the wlan chipset?

I think I understand you. My computer doesn’t have a Wi-Fi chipset, so I connect to the router using a cable that receives the signal in my room from another router in the hall. That is, I can’t connect to Wi-Fi and I don’t have bluetooth on my PC. And I don’t have adapters.

That is, I have 2 routers,
1 gives away
2 accepts
I am connected to the second one via cable
My PC has neither built-in nor external wifi chipset

For most of us it would seem simpler to use a wifi dongle via USB to provide all the functions of the router. The wifi dongle would work for both fedora and windows.

My guess in this situation may be that this is an issue with drivers for your ethernet adapter where windows uses a vendor supplied driver and linux does not have the same driver.

Please post the output of lspci -nnk | grep -A4 -i Ethernet so we can see the actual device installed.

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04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: ASRock Incorporation Motherboard (one of many) [1849:8168]
Kernel driver in use: r8169
Kernel modules: r8169
05:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch [1002:1478] (rev c1)

That adapter is exactly the same as the one I have in my PC, even to the ASRock sub ID for the chipset, and it shows the same driver for me.

I do not use mine for internet (I depend upon wifi with an intel chipset) so cannot compare performance over the ethernet.

There have been many posts here about that card and the r8169 driver for it. Some have found solutions so I suggest that you search on this forum for related posts and see what others have found as a solution.

Searches may use r8169 or the actual chipset id (10ec:8168 or 10ec:8168:1849:8168) to find related posts.

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Thanks a lot