Progressive Lag

Hi there,

I have an interesting problem with SL. I can run it fine, with everything turned up to 11 so to speak for about 10-20 minutes, average 20-30fps. After that time if I'm in an area with a lot of buildings, such as a mall, I start to suffer from screen freezes or extremely low frame rates if I try and turn round or switch from 3rd person to mouselook view. However moving forwards in a straight line so as not to alter what I see on my screen I get little or no frame rate loss.

This also happens with the graphics set to their lowest settings ... though my initial frame rate goes up to about 60-70.

If I close down and re-open SL (with or without clearing the cache) ... I am again fine for a limited amount of time.

I've played with the majority of the settings, altered both my network speed (which always gives me 0% packet loss and around 200ms ping ... which is about right for the UK) and my cache size, as I initially thought it was the disk cache causing me the problems.

I'm running windows Vista Ultimate 64 with 2Gig of high quality RAM (can't remember the manufacturer ... I think it was corsair), a 2.6 Dual core Intel CPU, EVGA 8800GTX GPU, and 2x 10,000 rpm SATA Raptor hard drives.

Any thoughts at all on what might be the problem would be gratefully received.

On the sim I've been testing it on, when I was lagging out the sim was reporting a 44fps frame rate. Also the same happens when I'm in either an empty sim or full, and if I take all my attachments off to ease up on the prim count.

So yea ... any thoughts

Many thanks?

I to am getting this, I wonder wgat is causing it and when they will be shot....

Two things. First, try turning off occlusion culling. That will stop the software from having to recalculate what to and not to draw every time you turn.

Second, and more importantly, get more RAM. 2GB is nowhere near enough. Vista Ultimate 64-bit uses about a gig and half all by itself. That leaves you just half a gig for everything else. Most likely, the reason SL works well for a short time and then becomes unusable after a time is that you're running out of memory as more and more objects trickle into the scene. For best results, put at least 4GB of RAM in your machine.

I have 4 GB of RAM.... dunno what else I can do...

Hmm, there goes that theory, then. Not sure what else to tell you, sorry.

Here's another thread about 64 bit Vista that Suezanne responded to: /111/d0/298477/1.html#post2259700

Thanks for the advice all,

Turned out it was my own silly mistake all along.

I had set the texture cache far to high.

My GPU has somewhere in the region of 756MB of ram so I'd set it to around that ... at 512 or better still 256 on the texture cache slider (Preferences > Graphics > Hardware Options) I now move almost seamlessly through second life.

I'd never have thought it would have made this much difference.

I hope this fixes your problem too Azkadellia