Stuttering, Small freezes and framerate Issues

[pitcard]

How exactly do you expect to make a patch when not knowing what causes the problem? And the refund (if you noticed) was the last thing that Jens said as the last resort. Don't hung up on that.

After the stuttering occurs, can you attach HPL.log as mentioned at the troubleshooting guide, Problem X? Maybe I can find connections.

I've tried the tweaks you've listed (including SSAO reduction; in fact, turning if off still gives rise to issues) but the same error occurs.

I've attached an hpl.log, it's spitting out all kinds of bizarre errors (and I doubt a re-install will alleviate them) Ignore the lowish framerate, the stutters occur when the framerate drops quite sharply, regardless of Vsync on or off.

In fact, it still happens with the lowest possible settings, Vsync on or off. When running Fraps in the background, the stutters occur below the game's refresh rate cap (60 here) when it heads into the mid-high 50s (with Vsync off)

From the log file, it seems like it's having a hard time mapping objects? Maybe that overhead causes slowdown?

I would like to know what's causing it, anyway. I also think that everyone else should post their hpl.log too, as suggested, to get more developer attention on this.