Rather than resurrecting an old thread, I'm starting a new one to see if a solution has been discovered.
I have found other threads concerning similar issues but no concrete solution:
http://forums.spiralknights.com/en/node/21250
http://forums.spiralknights.com/en/node/13199
http://forums.spiralknights.com/en/node/2188
Minimum requirements for Mac, per Three Rings:
OSX 10.4
Java 1.5
Display 1024x600
1.3 GHz processor
Graphics: 64MB Video Memory. GeForce 5 series, ATI 8500. Latest video driver.
1GB memory (1000MB)
300MB hard drive space
My current specs:
OSX 10.6.8
Java SE 6
Display 1650x1080
i5 2.4 GHz processor
Nvidia GeForce GT 330M 256MB
4GB memory
320GB hard drive space
Any zone with more than a handful of creatures or effects on screen creates great stuttering. Gun puppies, polyps, howlitzers, and gremlin demos are the greatest culprits. Even large areas of crystal blocks, especially respawning ones, can cause the game to appear frozen.
The issue is purely on the display end. My connection speed is proven adequate as the Windows box playing next to me runs very smoothly, though with different hardware (of course). I have kept my operating system, video driver, and java up to date.
As my current configuration is well above the required minimum, I find it strange that there are such dramatic issues.
Any assistance is greatly appreciated.
It's pretty hard to find the cause of problems like this. Only suggestion I can make is tweaking your graphics options (I assume you have a Nvidia control panel or something) or trying different versions or the card's drivers.