I recently installed a new graphics card, a Radeon HD 6950, and it's fantastic! Except with FFXI, where after about 30 minutes of play it will freeze my computer and generate a very nasty buzzing sound from my speakers, disallowing any input whatsoever and requiring a hard restart. This only ever seems to occur with FFXI. My drivers have been updated, and subsequently replaced with older drivers to test with, and the issue continues to occur. Even stranger, the freeze seems to only happen either in Abyssea zones, or during combat (i'm not sure which might be the cause; the only time I've noticed this happening has been in both Abyssea, and in combat-- I've "afk" tested by just sitting in non-combat zones like the Mog House, Jeuno, and San d'Oria, as well as afking in Abyssea doing absolutely nothing and lasting the entire 120 minutes with no issues... but if I've been fighting for a while, then the freeze occurs).
I would like to add that after tonight's freeze, I started playing around with keeping other programs on (in this case, Steam) with FFXI running in the background behind them, playing under the same conditions that would cause my system to freeze (in Abyssea, party in combat) , and it seemed to have an effect after about an hour (no freeze for twice the typical length of gameplay).
Steps (most recent experiences):
1. Entered Abyssea - Vunkerl, walking around after having fought Gruesome Gargouilles for a short time (15-30 minutes), system freeze.
2. Entered Abyssea - Vunkerl, AFK'd at entrance with 120 minutes of time, no issues whatsoever.
3. Entered Abyssea - Altepa, fought Camelopardalis for a short time (20-30 minutes), system freeze (this happened tonight).
4. Re-entered Abyssea - Altepa, exact same scenario as before but with FFXI running in the background: no issues for the duration.
Date & Time: 10/13/2011, 20:15 EST (8:15 PM EST)
Frequency: Approximately every half hour or so, unknown exact conditions (possibly combat related, possibly an issue with Abyssea zones, possibly a combination of them?)
PC Manufacturer & Model Number: Homebuilt Computer
OS: Windows 7 64-bit
Graphics Card: Radeon HD 6950
Type of Internet Connection: Cable
I'm really at a loss of what to do about this! Could it be my card is just bad?