Suitable hardware for the home network?

I currently have a small problem with my home network and don't know which devices can best solve it.

Following situation:

I'm with Kabel Deutschland and have a contract for a 1000Mbit / s line. For this purpose I have the AVM FRITZ! Box 6591 Cable. The TV in the living room and all mobile devices (laptop, mobile phones) work without any problems and the throughput is good.

Now my study, in which my work computer is also located, is unfortunately the most distant room from the Fritz Box in an old building (I would like to say, however, that I still have good Wi-Fi reception with my mobile phone).

Since the computer itself only has one Ethernet connection, I don't have a WLAN stick, but I could still get two DLAN adapters (AVM Powerline 1000e) for free from friends, I thought I'll give it a try.

The result of the speed test looks like this:

On the cell phone next to the Fritz Box: approx. 500Mbps downstream, ping 8-20ms

On the mobile phone via WLAN in the study: 200Mbps downstream, ping 20-30ms

On the PC via DLAN in the study: with a lot of luck 32Mbps downstream, ping 12-50ms

Since there are obviously a few problems here, I wanted to ask if someone might have some advice on whether and, if so, how I can improve the situation (preferably with concrete product suggestions).

So you could try a WLAN stick. If you have a good throughput with your cell phone and the latency is almost permanently low, then I would try a stick. Otherwise you could try it with a PCIe card.

Dlan / Powerline is always such a thing, because it depends on how old the house is and, above all, on which floor the router and destination are located. If both are on the same floor, there shouldn't be a big problem. However, if both are on a different floor and the electrical phases do not overlap, you will get into difficulties when you try to use Dlan. Dlan is anyway like wlan in terms of data throughput and latency: it fluctuates and depends on a wide variety of influences.

Personally, I would try a Wi-Fi stick first if you don't have the opportunity to lay a cable.

First of all: You will never be able to achieve 1000 Mbit / s via WLAN or dLAN, for these high data rates you then use LAN cables.

However, if you can achieve 200 Mbit / s with your smartphone, then I would recommend a WLAN adapter (if possible dual band n + ac) with 2 external antennas (> 3 dBi or better).

It doesn't matter whether you use a PCIe WLAN card or a WLAN USB stick. The main thing is that there are 2 (or more) external antennas, which can then be positioned optimally, as elevated as possible.

Maybe this stick here (there's a stand with USB extension included!):

https://www.amazon.de/...B01M67XBJ4

Or this PCIe card is also neat:

https://www.mindfactory.de/...54532.html