I have forge version 9.10.0.804 and it seriously lags. all the 1.6.2 versions lag that i've tried. I tried both launchers and I have tried it without any mods. What do I do?

i have 4 gb of ram and a sony vaio computer if thats the problem.

It was just fine in 1.5.2 so I dont think its my computer.

Oh and it works well in singleplayer like 40-50 fps

but in multiplayer its really laggy.

well when I'm around players I lag and around projectiles I lag

I have more player models radar bro and optifine

no no no i tried it without any mods!

diesieben07 get the stick out of your ass, that is lag just like anything else is lag.

"Lag: noun. a period of time between one event or phenomenon and another."

Says NOTHING about the internet -.-

So quit being a prick.

 

Anyways we cant help you fix 'lag' you have to diagnose it a bit yourself.

Start trying to find a way to reproduce it every time.

Then start removing mods till it stops being reproducible.