Hello,
I have already searched for solutions on Google, Lithuanian PC builders groups and etc. to no avail. Last month I got a long Ethernet cable that is connected to my Wi-Fi router and directly into PS4. All devices have a good connection with Wi-Fi up until I turn PS4 on. Then the speeds fall down drastically and I can't even scroll through facebook feed it is so slow. There are 2 photos: 1st one: WIFI speed on my PC when PS4 is off, 2nd one: WIFI speed when PS4 is on.
Are there any solutions to this problem, because lately I just couldn't use the PS4 because my family losses access to internet while I'm using it.
https://imgur.com/a/d3nTBkb
WIFI Router: TP-LINK Wireless N Router WR841N