Is anyone else getting freezes at seemingly random intervals? I've never seen anything quite like it, the cursor still responds smoothly (so the game is still running at a decent framerate) but the action stops and sounds loop for about thirty seconds, before going running a few frames and then freezing again. It will even accept commands issued while frozen. There may be a correlation with throwing large amounts of ordinance about - it stopped after my rocker squad dropped below thirty members, but started up again later without anything dramatic happening.
And more importantly, does anyone have any idea of a fix? The forums I can find dedicated to this game are either dead or in Russian, and there's no mention of this problem anywhere.
Specifications:
q6600 @ 3.4Ghz and rock-solid stable.
ASUS Maximus Rampage
4Gb RAM
Geforce 8800GTS 512Mb
Vista Home Premium 64 bit.
Oh, and does anyone know if the expansion pack is going to come to GOG?

an OC can be rock solid and still fail in certain apps which run really tight logic cycles.
Perimeter is one such game with recurrsive logic, remove the oc.. just try it, if its still not stable set it back and post again.

Have you tried allowing the game to only run on one core? Others have had issues with using more than one core for this game, it is possible your problem is related.
Alteisentier wrote:
As you have four cores you could try un-ticking all cores other than the first and see if that helps.

Yeah, tried that. It may or may not have mitigate the problem. Or it could simply be that in later levels you have better things to do that throw dozens of low-level units around. Anyway, I can live with it now.

Could you explain to me what a "tight logic cycle" is?
You do know that any game with path finding implements recursive logic, right?
That would include all RTS's and most FPS's ever made...

Not really sure, but is your sound card driver up to date?

For the record, I have run this game on a dual core E6600 and a quad core Q6600; no problems.
This _is_ a stretch, but I have seen the exact same symptoms (albeit in half life 2 and C&C generals) on 2 different occasions - it was the result of a system starved of RAM and an extremely fragmented swap file.
The former sysinternals page has a tool that allows you to defragment core system files, such as your registry and your page file (virtual memory, when you run out of RAM).
Here's a link:
http://technet.microsoft.com/en-us/sysinternals/bb897426.aspx
Good luck!

Hi LiquidWeaver,

Thanks for this insights. It does appear that Perimeter is among the GOGames that don't like AMD multi-core processors. The Intel processors you cite, as you say, work no problem. I have a dual-core AMD processor and Perimeter ran miserably on it out of the box.

But, thankfully, there is a relatively minor config adjustment that AMD multi-core folks can do at installation which will fix this issue. I wrote this tip up in its own topic in hope that it will help new players enjoy this excellent game.

Thanks again to all GOGers helping to support this great game.