Minecraft has less FPS in singleplayer than in multiplayer?

[Portable Desert]

Is it just me or does this affect multiple people? How can I fix it? I have OpenGL on, graphics set to fast, and smooth lighting doesn't make a difference when turned off.

[Commander Thor]

Is it just me or does this affect multiple people? How can I fix it? I have OpenGL on, graphics set to fast, and smooth lighting doesn't make a difference when turned off.

As far as I know, Advanced OpenGL has issues with Minecraft, if you have that on, turn it off.

[Portable Desert]

It doesn't really change much :p

[Commander Thor]

Lol.
Is it really that big of an issue?
I mean, are you getting like <30-45fps?

[Portable Desert]

A few seconds at a time. I can usually take 20fps and up. Im getting different amounts, like 15FPS, then 20, spikes of around 3, then it jumps to 30...all kinds of crap.

[Commander Thor]

That's.... Quite odd.
And there's nothing in the background that could be hogging up extra resources?

[Portable Desert]

Sometimes my little virus scanning thing starts up, if I am playing I usually just close it. Im gonna try re-installing.

[AutoPlay]

PC specs please