Massive fps drops

[dragonfrend]

So ive been playing the new release of FTB 1.5.2 without greg tech v 0.2(i have added rei's minimap and inv tweaks) and after i got about mid game i suddenly get massive fps drops from ~80fps to 0 and back up again they get more and mroe intense as the game goes on.
I dont have that much machines running just a forestry multiblock farm and a BC quarry(max size).

Specs:
OS:Windows 7 x64
CPU:AMD Phenom 2 x6 1075T
GPU:GTX 550ti
RAm:8 Gb 1600(i have set 2,5Gb to MC)

Yes I have latest nvidia drivers.
Yes I have latest Java.
Yes java is 64 bit.
Yes I did try optifine it didnt do me any good.
No my computer is not overheating.
No I don't have 50 games running at a time just a twitch.tv stream on the background.
Yes I was getting theese drops before I added inv tweaks and rei's minimap.

Thanks in advance!

 

[Ashzification]

First (to rule out any possible problem with your setup):

Spoiler

Please follow these steps exactly: http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/9/0/basic-troubleshooting
This is to rule out any issues with your client setup.

If you continue to have trouble, please post your complete client-side console log in debug-mode to pastebin.com and link your paste URL here.
To find your logs: http://desk.feed-the-beast.com/inde...29/1/what-log-do-you-need-where-can-i-find-it

 

[Kaz!]

So ive been playing the new release of FTB 1.5.2 without greg tech v 0.2(i have added rei's minimap and inv tweaks) and after i got about mid game i suddenly get massive fps drops from ~80fps to 0 and back up again they get more and mroe intense as the game goes on.
I dont have that much machines running just a forestry multiblock farm and a BC quarry(max size).

Specs:
OS:Windows 7 x64
CPU:AMD Phenom 2 x6 1075T
GPU:GTX 550ti
RAm:8 Gb 1600(i have set 2,5Gb to MC)

Yes I have latest nvidia drivers.
Yes I have latest Java.
Yes java is 64 bit.
Yes I did try optifine it didnt do me any good.
No my computer is not overheating.
No I don't have 50 games running at a time just a twitch.tv stream on the background.
Yes I was getting theese drops before I added inv tweaks and rei's minimap.

Thanks in advance!

Could be a bad chunk/corrupted area try moving away from it and wait a while if its a lot better when you exit an area then you have a high chance of a bad chunk.

You can use this tool to remove bad chunks using in game coords from either F3 or the mini-map

http://dinnerbone.com/minecraft/tools/coordinates/

Then you can delete it from the world folder. If that is the case.