Windows .exe Really laggy even on lowest settings, on a good computer.

[tomutwit]

My computer runs vanilla Minecraft at about 100fps. I have installed mods in the past- Tekkit and Spout- and they have lagged. I was quite liking the look of FTB and tried it, but it is extremely laggy in terms of FPS, even at unsmooth lighting, fast graphics, decreased particles, normal render and Max FPS, with 3.75GB given to the game. If I use the Optifine trick suggested on here would that work or is there a different problem?

 

[Wabbit]

Optifine helps a LOT.

Could you provide a log and a few details about your Computer Specs? Java? OS?

 

[Ashzification]

A log will help rule out many other possibilities

 

[Meldiron]

Is it by any chance a laptop?

 

[Wabbit]

Given how he's not giving us a reply, It's safe to say he's solved the issue.