Solved: PS4 FIFA 21 - Unplayable lag and speed up delay despite good internet speeds - Answer HQ
Increase the connection speed with the optimal MTU value : r/PS4
PS5 vs PS4 Internet Speed Test : r/PS5
My Connection Speed to start Share Play (PS4), is right on threshold. - TechnoBabble - Netduma Forum
I have super fast internet (360+mbps average up and down) but my PS4 always struggles. Reset the network and made sure it was connected correctly and connection speed test shows ridiculously slow
Image] Why is the connection speed so bad on my OG PS4? : r/PS4