That's my suspicion, but it could also be a 32-bit/64-bit issue, since I have SH5 (32-bit) running on 64-bit Vista. Did the detection tool report your 4Gb correctly? I started a thread to ask other Kaleuns about that, but haven't seen any responses.

I use windows 7 64 bit and the detection tool did detect the 4gb if I remember right.

Interesting. There seems to be at least one other Kaleun where the detection tool reported less than what was installed:

http://www.subsim.com/radioroom/showthread.php?t=171811

The HW detection tool only recognised 2GB on my W7 ultimate 64bit system but I don't think it only does that overall.
My main problem is that there is no sli profile for SH5 so it doesn't see my second card.

You might find my injection here out of line. If so just ignore me I don't mind.

So here it goes. I was having similar stuttering with Flight Simulator. Only in FS there are settings for letting FS manage frame rate or setting them to a fixed amount. Strangely enough if you let it run frame rates freely it will stutter even though it should allocate memory better this way. However if you find you can get ~ 60 FPS and set it to a fixed amount lower then that like 40 FPS then Flight Sim would run smooth with no stuttering. Now how to apply this to SH5 I don't know.

Hey guys, I dug this thread back up to report that my stuttering is fixed! If anyone else is having "mouse lag" or other stuttering (decent framerates with stutters or "hiccups" while panning with the mouse), you might want to take a look at this thread:

http://www.subsim.com/radioroom/showthread.php?t=172474

Specifically, Seeadler's post:
http://www.subsim.com/radioroom/show...06&postcount=9

It worked for me, SH5 is finally smooth! :yeah:

Awesome, thank you Hornsby and Seeadler for the original post. I was having the same issues and remembered this thread. So far it has helped a lot. Thank you guys again.