[RGOimpact]

Using LAN? Didn't quite get your message.
However, LAN is on your computer,
If you are using IP 192.168.1.#, it will tend
to be slower. Instead I suggest using 127.0.0.1.

192.168.1.# has to connect to your modem first.
127.0.0.1 is your local computer I.P, there for
no modem connection required.

Using a server? Check out the specs of the server
on your provider. Suggested action would be to buy
a bigger and better dedicated server, rather than a
hosted FTP server. Dedicated servers can range from
prices to $40 a month to $400. A $40 month server
is great for SA:MP alone.

Your gamemode. Any errors/warnings when you compile?
All scripts up to date including plugins and includes?
Are you using a 'HECK' ton of 'PVars'?