Graphical problems with Dragon Age Origins Options

[Tomipapa]

Hi everyone!

I have a "little" problem with the game:
http://a.imagehost.org/view/0980/lol2
http://a.imagehost.org/view/0474/Lol1
The problem occurs after 1,5-2 hour gameplay. Restarting the game or the computer didn't help. Windows xp sp3 Geforce 8600 GTS with the latest directx, driver and physx. There are a lot of people in the bioware forum who have the same problem with the same graphic card family(8600 GT or GTS). I hope someone could help me. :)

[MrInfinit3]

Other hardware specs, driver version (actual #), hardware temps @ idle and at load(after u play for that 1.5-2 hours and it does that) , and resolution please :) (mainly curious to see the 8600 mem and core temps). A quick fix would be to force shader model 2.0 (SM2.0)or lower. There are a few games that will do that with that gpu.

[Tomipapa]

nv4_disp 6.14.11.9107 - nVIDIA ForceWare 191.07
1024*768 75Hz vertical sync enabled ingame
Temperatures:
idle:
Motherboard 32 °C (90 °F)
CPU 31 °C (88 °F)
CPU #1 / Core #1 40 °C (104 °F)
CPU #1 / Core #2 38 °C (100 °F)
PWM 38 °C (100 °F)
GPU 48 °C (118 °F)
GPU Diode 53 °C (127 °F)
GPU Ambient 39 °C (102 °F)
SAMSUNG SP1603C 29 °C (84 °F)
afer:
Motherboard 35 °C (95 °F)
CPU 49 °C (120 °F)
CPU #1 / Core #1 55 °C (131 °F)
CPU #1 / Core #2 53 °C (127 °F)
PWM 52 °C (126 °F)
GPU 57 °C (135 °F)
GPU Diode 61 °C (142 °F)
GPU Ambient 47 °C (117 °F)
SAMSUNG SP1603C 31 °C (88 °F)

Some says that DAO will overheat most components by running most everything at 100% and that cause the problem
but the after temp as not as high i expected or the everest tricking me

[ShardsOfBlue]

There is a topic about this over on the Dragon Age Origins forum. It seems that 8600, 8800, and 9800 GT*s all have this issue.
http://social.bioware.com/forum/1/topic/58/index/88751/1

My own post on that thread:

I have the same issue, and alt-tabbing fixes it for a while, but eventually (after a few hours) it no longer has any effect. I was running on XP 32bit SP2, but after experiencing this and a hard crash of the card itself, I upgraded to SP3. The game is now playable, but only barely due to the issues everyone else here is noting.

DAO Patch 1.01
WinXP 32bit SP3
Nvidia GeForce 8600 GT
2.75GB RAM (of 4)
Intel Core2 Duo
PasteBin of my full specs via DxDialog: http://pastebin.com/m53bc34bf

I've been monitoring my GPU temp and it never goes above 52C.

Driver 6.14.11.9107

A quick fix would be to force shader model 2.0 (SM2.0)or lower.

How is this done?

Thanks for any help. :)