Windows .exe MASSIVE Lag Spikes.

[Zamine]

FTB Launcher version:
1.4.7
Minecraft Version:
1.4.7
Java version:
Version 7 update 25

Detailed description of the issue / how can the issue be recreated: So everytime I log on to a server it will be fine for a little bit, then a lag spike happens and i get from 50 Fps to 2 - 4 fps and it just stays at 2 - 4 fps.
Error logs:
http://pastebin.com/WwLsExJt
I(ts at the very bottom)

 

[Zamine]

Bump.....

 

[GuildMaster]

You got a 32x Windows ( "OS: x86 Windows Vista 6.0" ), which means only 32x Java, which means you cannot allocate more than 1GB RAM to Java. Which means it will be slow no matter what.
That lag you get, everyone does. FTB got tons of mods, unfortunately. Just try some other modpacks (instead of the huge Ultimate try, idk, YogCraft or Mindcrack), check if you can install Windows 64x with Java 64x.
From what I know this lag isn't just because of mods - original Minecraft code isn't too optimized, in vanilla you would also get lag spikes.

 

[Zamine]

I get the same message on mindcrack. And my vannila minecraft I get 100fps so... Would formatting my comp help, because ftb ultimate used to work fine untill recently, mabye theres not enough memory on my comp?

 

[GuildMaster]

My question is, have you got more than 4GB RAM? Also, do not reformat your computer. It's useless and takes too much time.
I'd rather recommend you defragment your computer, especially if you have lots of stuff on it. http://windows.microsoft.com/en-ca/windows-vista/improve-performance-by-defragmenting-your-hard-disk

 

[Zamine]

I did have 4gb RAM, I out it in a repair shop one time and when I got it back it was 3gb RAM, ill try defragmenting.
thanks for the help!

 

[SatanicSanta]

Bump.....

Just for future reference, do not bump. This is considered spam with most mods. Just don't want ya to end up banned