ok dude let me explain some of what exactly is there and u are kinda right
now if we have 90/90 full server as

and the server contains players lets say in a decent of 200-150 ping and the max it goes to 600 , now within that might sum ppl have it on with bad net but it still have a hand to do with the number of the players each player have a connection and the ping is just the speed of the line so if ur ping is high means the line between u and the server is bad , or containing problems so how does the NUMBER effects , if many players had low pings like 5 or 70 at least 100 , it should be not lagging but it lags at some points because of the other laggy users they take more than needed , more performance and work on the server trying to get the link line back to work thats why the ping goes high so now when the player with low pings that and there are like 90 person and most of them are with the world's highist ping it makes a thing called desync to all the players on the server which effects the server's ping and speed at the same time the desync is a thing that works in dayz game in which u sometimes in taht game realize that u still have connection but u keep moving but at few secs u get like dragged back a bit thats the desync (ur speed is more effective than the performance of the server's) which makes u lag with a low ping at sometimes and the effects comes from the bad host , the server have bad host for me im nearby France at the server host country and i dont get lag problem but its the laggy users making the server lag because they are more than it takes , thats it i gave u a half of the advanced information now what to do is 3 things ,
1. the server changes/fixes/upgrade its speed lines .
2.the server makes ping limitation for like 500 limit
3. using the server's DNS at ur wireless router might fix it a bit BUT IN A NOTICEABLE VIEW
thats it if u want more info tell me in comments or replay . thx for reading !
note : computer performance has no hand in the whole lag thing except for few types which affects desync more to bad . (and i mean the junk shit PCs)