No light cast from a held torch

[Knight Tobyas]

For some reason the torch I am holding doesn't cast light when I am in the radius of something else that casts light.

This is what it looks like when you are approaching an offending torch,
http://i.imgur.com/rnFAJ.jpg
when you are standing next to it (when you look at it it looks normal),
http://i.imgur.com/BbMDT.jpg
and when you walk away with the torch behind you.
http://i.imgur.com/kkf8q.jpg
This is around the corner from a save point. You can actually see the radius of the save point's light and the light from my held torch taking over after it ends.
http://i.imgur.com/K9t8o.jpg

This doesn't happen with every light source, but it happens enough to be annoying through the first three floor and finally makes some puzzles unsolvable on floor four since I can't see what is happening. I have played around with my video card's Antialiasing and V-sync setting to no avail and with the in game settings. I have tried uninstalling, reinstalling, and redownloading. Nothing has helped.

I have a pretty old system (Pentium 4, GeForce 6200). I can understand if my computer is just not good enough to handle LoG's lighting system, but I am hoping there is a setting somewhere that I am overlooking.

[gambit37]

Um, this is not how the game is supposed to look....!

You need to turn off anti-aliasing in your graphics card's control panel. That should hopefully make the lighting behave correctly.

EDIT: Actually, I don't think your card is fully supported. Min card is listed as GeForce 7600.

[Knight Tobyas]

I was afraid that would be the response. I've been procrastinating about getting a new computer for almost 5 years, but I guess it's finally time to invest in one.

[BlueLegion]

I was afraid that would be the response. I've been procrastinating about getting a new computer for almost 5 years, but I guess it's finally time to invest in one.

most definately. grimrock is a pretty GPU-demanding game

[gambit37]

If it helps, I have a Radeon 6870 HD and Grimrock runs like a dream...

[BlueLegion]

If it helps, I have a Radeon 6870 HD and Grimrock runs like a dream...

I got an HD 5770 and it runs very smoothly too (although very few of my other games do).

[Dynosaulo]

I believe your problem is not your graphics card, but your processor. Unfortunately, LoG isn't tested to work on single-core processors.

But still, despite that fact, I know a lot of people who run the game on Pentium 4 PCs with no problems.

Maybe try updating your drivers.