Wi-Fi repeater behind the door?

I have my wireless router in the hallway from there are about 3-4 meters to the living room door and a total of about 6-7 meters to my Ps4. My question now is if I'm going to make the living room door right at the door on the living room side a repeater or does a door weaken the wlan so hugely that it would be worth it?

If it is a wooden door or laminate door, the wireless signal will easily pass through the closed door. Wood hardly weakens the WLAN.

Normal interior walls weaken the WLAN signal already more. Concrete ceilings, there's iron in it, with WLAN is very poorly penetrable.

Worse is it with aluminum or metal doors, because WLAN does not go through.

But first check if the door at all on the imaginary straight line between router and PS4 in the way. Because WLAN signals never go around the corner, but exactly straight-line. Make sure that there's nothing bigger metallic on this imaginary straight line in the way (also no sheet metal housing). Routers and PS4 suitable (elevated) place, is also a good way to improve the wireless LAN conditions.

If you still have at least 50% of signal strength without a repeater (for example 2 out of 4 bars on the smartphone), a repeater is not required, it just increases the ping, which you would not want as a gamer.

If you want to know more, you have to call more info:

DSL connection? What speed does the DSL contract have?

What kind of router is used (Model?)?

What does the speed on the router via LAN cable?

What speed should be achieved on the PS4?

Thank you first for your detailed answer. So the Ps4 is almost exactly on straight straight line to the router and there's just this door in the way, which incidentally only from thin wood is the barely absorbs sound. For example, I have full bars on the mobile phone in the living room and actually in the whole apartment. I have O2 DSL 100k get wlan about 95-98k pure and with cable even 105k. Router is the Fritzbox 7590 MK. The only thing that surprises me is that I have a lot of download speeds on the phone and that Ps4 gets only 20-30k, although the distance is the same. 😅

The FritzBox 7590 is a really good dual-band wireless router, that's ever good, because you have several settings.

It could be that the PS4 works for some reason with the very old slow Wi-Fi g-standard. Look in the FritzBox (configuration page in the browser call) and check it, if the PS4 in the g-standard is connected. To find under WLAN / radio network.

If that is the case, I would somehow switch off the g-standard in the FritzBox / switch to the n-standard (ie not g + n, but only n at 2.4 GHz). Or. At 5 GHz, set only ac or n + ac. Something can be set only in the FritzBox, if you have the "Advanced View" enabled (menu top right).

Whether your PS4 can the fast ac standard, I can't say unfortunately. If the PS4 ac standard, I would in the FritzBox different SSID's for n-standard with 2.4 GHz and ac standard with 5 GHz trial set times (suggested by name: Mueller24 and Mueller50). Thus, you can choose in the PS4, the Wi-Fi network Mueller50 and then you are certainly connected to AC-WLAN and not with Mueller24 in the g-standard.

I hope you understand what i mean. If and which standards are selectable in the FritzBox is model dependent!

Here are the typical speeds of the various WLAN standards:

https://www.elektronik-kompendium.de/sites/net/0610051.htm

I know a bit about it and understand what you mean. I'll try it all out and hope it works.

I only have the following choices in the 2.4 GHz:
802.11n + g
802.11b + g
802.11n + g + b

Then look in the FritzBox first to see if the PS4 uses a g-standard instead of the n-standard (you can only look up if the PS4 is connected). If the PS4 already uses the n-standard, you can save yourself this conversion. But out of curiosity, I would give it a try.

I once read somewhere that the PS4 higher Wi-Fi data rates somehow (reason unknown) did not work properly.