@HeadSHOT The game was released in 2004, 19 years ago. The mta client has its limits. for e.g. the fps could only be between 25 and 100. We can not disable it to get higher fps than 100.
There's no way to decrease someone's ping. The ping is the result of the distance of a player and the server. Only the player's ISP can build better network and the countries ISPs where the packages are sent.
We can't do anything about their high ping.
We could set up a ping limiter which kicks you if you have more ping in average than the limit. But if we did it nobody would play then cuz nowadays there are no european players only south american & south asian players playing.