Constant freezing FTB infinity evolved

[carbochem]

So till about 3 hours back, my laptop which sports an i3 processor, 4gb ram and 2 gb nvidia graphic card just couldn't run one of those beefy packs like direwolf20, ftb infinity evolved etc etc. I got bored, boot into ubuntu and try setting up infi evolved there and not only does it initialize, it's damn smooth around 90 fps as compared to the 2 fps i get in windows. Life would be perfect now if only the game wouldn't freeze once every 10-15 seconds. The game works perfectly at 90-100 fps and then suddenly it drops to 0 fps,0 chunk-updates for a brief 5-7 seconds after which it shoots back up to 90-100 fps. I've assigned 3gb of ram with these arguments which i've been using since the past 6 months or so:

java -Xmx3G -Xms2G -Dfml.ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:MaxTenuringThreshold=15 -XX:MaxGCPauseMillis=30 -XX:GCPauseIntervalMillis=150 -XX:+UseAdaptiveGCBoundary -XX:-UseGCOverheadLimit -XX:+UseBiasedLocking -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=15 -XX:+UseFastAccessorMethods -XX:+UseCompressedOops -XX:+OptimizeStringConcat -XX:+AggressiveOpts -XX:+UseCodeCacheFlushing -XX:SoftRefLRUPolicyMSPerMB=10000 -XXarallelGCThreads=10

Has anyone been in the same place and found out a way around this?

 

[Lionear]

I have the exact same issue with FTB Infinity 2.6.0, quite often the entire game freezes or my FPS drops like crazy. Still don't know why this happens so hopefully someone on this forum can help us both...

 

[AdjectivePants]

Have you tried installing optifine?

I had some issues with performance on Infinity (not the exact same issue)and it did wonders for me.