3870X2 - Large FPS Drops
Hi,
I recently bought one of the brand new 3870X2 cards, I have tried all the current publicly available Vista x64 drivers (inc betas) and all give this same problem. However the driver set I am currently using can be found here:
http://files.filefront.com/Sample+R6.../fileinfo.html
The problem is, while playing UT3 the game will have excellent performance when the map first loads, but after a seemingly random length of time average framerates will drop considerably.
I have found one location that can cause this performance drop every single time.
If you start the game, go to Instant Action, Deathmatch, select 'Deck' as the map, set bots to 0 and load the map.
When first loaded framerates are excellent, I have taken two screenshots of a random part of the map just after loading, in the top left you can see the fps (recorded using FRAPS).
Before 1
Before 2
This fps remains good, until you go down to the bottom level of the map (Goo Pit) where the 'portal' to the redeamer can be found. The very instant you walk close to the portal the game litterally jerks/blinks once and from that point on all framerates plummet. (see screenshots below taken after going near the portal of the same areas as before, this time labeled 'after')
After 1
After 2
It is almost as if one GPU just turns off and the card goes into single GPU mode.
Performance does not return in UT3 until the game is completely exited and reloaded.
I have had the same thing happen in the Demios map as well, however I have not been able to find what causes the card to slow down in that level and as such cannot give such a precise method to make the problem occur.
I have not witnessed the above happening in any other game i've tried so far, so it seems to be limited to UT3, most certainly on the Deck map, pretty sure it is on the Demios map too, I havn't had time to check any others.
My system specs:
Powercolor 3870X2 1GB PCI-E
Intel Q6600
4GB GSkill PC8000 PQ
ASUS P5K-E/WiFi AP
OCZ GamerXStream 600W PSU (2 x 6pin PCI-E)
Creative Audigy 2
2 x 320GB Seagate 7200.10 SATA-II
1 x NEC 2510A DVD-RW
1 x MSI 16x DVD-ROM
Beliniea 2225 22" TFT
OS: Vista Ultimate x64
All latest drivers, Vista fully updated.
UT3 + 1.1 patch @ 1680x1050 all in game settings on highest possible, no AA, no Anniso, Smooth Framerate disabled.
I think that is about everything I can tell you, if you need more info just ask.
Any ideas?
I recently bought one of the brand new 3870X2 cards, I have tried all the current publicly available Vista x64 drivers (inc betas) and all give this same problem. However the driver set I am currently using can be found here:
http://files.filefront.com/Sample+R6.../fileinfo.html
The problem is, while playing UT3 the game will have excellent performance when the map first loads, but after a seemingly random length of time average framerates will drop considerably.
I have found one location that can cause this performance drop every single time.
If you start the game, go to Instant Action, Deathmatch, select 'Deck' as the map, set bots to 0 and load the map.
When first loaded framerates are excellent, I have taken two screenshots of a random part of the map just after loading, in the top left you can see the fps (recorded using FRAPS).
Before 1
Before 2
This fps remains good, until you go down to the bottom level of the map (Goo Pit) where the 'portal' to the redeamer can be found. The very instant you walk close to the portal the game litterally jerks/blinks once and from that point on all framerates plummet. (see screenshots below taken after going near the portal of the same areas as before, this time labeled 'after')
After 1
After 2
It is almost as if one GPU just turns off and the card goes into single GPU mode.
Performance does not return in UT3 until the game is completely exited and reloaded.
I have had the same thing happen in the Demios map as well, however I have not been able to find what causes the card to slow down in that level and as such cannot give such a precise method to make the problem occur.
I have not witnessed the above happening in any other game i've tried so far, so it seems to be limited to UT3, most certainly on the Deck map, pretty sure it is on the Demios map too, I havn't had time to check any others.
My system specs:
Powercolor 3870X2 1GB PCI-E
Intel Q6600
4GB GSkill PC8000 PQ
ASUS P5K-E/WiFi AP
OCZ GamerXStream 600W PSU (2 x 6pin PCI-E)
Creative Audigy 2
2 x 320GB Seagate 7200.10 SATA-II
1 x NEC 2510A DVD-RW
1 x MSI 16x DVD-ROM
Beliniea 2225 22" TFT
OS: Vista Ultimate x64
All latest drivers, Vista fully updated.
UT3 + 1.1 patch @ 1680x1050 all in game settings on highest possible, no AA, no Anniso, Smooth Framerate disabled.
I think that is about everything I can tell you, if you need more info just ask.
Any ideas?
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