Topic Title: HD 7970 FPS drop/lag issue
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Created On: 09/24/2012 02:42 PM
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 09/24/2012 02:42 PM
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Putresopp
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Ok, so i got myself an Asus HD7970 Direct CU II a week ago. Everything has worked fine until today, keep in mind that NO changes or updates have been made to my computer after installing the HD7970.

i'll use COD: Modern Warfare 3 as the example, but its happening in all games.

Problem:

When i look directly at the ground or into a wall i get 90 FPS, but if there is smoke inside - fps drops to like 20-30, and sometimes lower.

When im outside on a map with fog/rain its unplayable,  fps drops to 10-20. So it seems like my HD7970 has some kind of problem with smoke/rain.

 

What i've tried:

 

  • Format and re-install windows 
  • Tried every catalyst version from 12.8 to 12.1, using driver sweeper to remove old files
  • Also tried without driver sweeper
  • Tried both VGA and HDMI cables.
  • Moving games and steam to a different HDD
  • Finally i switched back to my HD5870, no problems at all. So it's not my pc thats f**** up, but the HD7970 itself.

 

 

System:

 

  • Crucial M4 128GB SSD (System Disk)
  • Win 7 Home Premium 64-bit
  • Radeon HD7970 Asus Direct CU II (stock speed) (HD7970-DC2-3GD5)
  • AMD Phenom x6 1100T (Stock Speed)
  • 8GB DDR3 Ram 1333mhz (stock)
  • MSI 890FXA-GD70 motherboard
  • Cooler Master silent power 600W PSU

 

 

 09/24/2012 03:27 PM
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Mime
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That's a seriously weird problem.  If this was happening out of the box it would make me wonder if some of the 7970's onboard memory was dead.  That could starve the GPU for data and slow it down under load.  I guess that could still be the case, but it would have to die all at once and completely, or you would have noticed a trail of other problems leading up to this.

Usually hardware is an all-or-nothing kind of deal.  If you're not getting artifacts, crashing, freezing, or any of that, and the only symptom are these weird slowdowns, then it's the only hardware problem like this I've ever heard of.

Send it back and get a replacement, I guess... unless you can find some setting or BIOS option or something which could be holding the card back.



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 09/24/2012 03:36 PM
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stumped
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try these drivers > http://benchmark3d.com/amd-catalyst-9-001-september-4



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 09/24/2012 04:18 PM
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Putresopp
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Agree!

I've got alot of experience with computers, both hardware and software. And this is one of the weirdest things i've seen in a while. As you say, had it been right out of the box i would have no problem understanding the problem.

At first i thought that the HD7970 didn't get enough power, but 600W should be more than enough.

i'll try the driver posted by stumped tommorrow, if that dosen't help i'll return it and get a new one (hopefully). 

 09/25/2012 03:37 AM
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Putresopp
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I get no artifacts or crashes.

But i get a freeze, it actually feels more like server lag tho, but it happens in singleplayer aswell. For example, if im moving forward - sometimes the game/graphic gard "freezes" for about one second, lets say i keep holding the forward button down during the freeze. Now, when it unfreezes the HD7970 catches up and i have moved ahead of my last spot (freeze location).

Is there any way to check if this actually is a hardware issue? A test program or something?

 

Im also going to try stumped's driver when im back from work later. Ill keep the post updated.



Edited: 09/25/2012 at 05:16 AM by Putresopp
 09/25/2012 11:52 AM
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Mime
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You could use GPU-Z or something similar to monitor GPU usage, just to verify if these slowdowns coincide with load on the system.  If they do, then for some reason the load balancing of your GPU is seriously out of whack.  The freeze could be just another weird slowdown that's bad enough to actually stop things for a second.  It's still weird that hardware would cause that, but any thing you can use to get more information about the problem is a good thing.



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 09/25/2012 12:43 PM
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Eydee
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To me it sounds like the card is stuck with 2D clocks for an unknown reason. GPU-Z can tell you.



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 09/25/2012 04:31 PM
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Putresopp
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Originally posted by: stumped try these drivers > http://benchmark3d.com/amd-catalyst-9-001-september-4

 

 

Woooohooo! Your drivers worked like a charm, now im at stable 91FPS no matter what happens in COD:MW3! I would almost kiss you if i could. lol

 09/25/2012 04:37 PM
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Mime
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Nice... Looks like you found a driver bug.  That makes a lot more sense than some kind of uber-weird hardware thing.  We don't know what that bug is, but apparently it had been around for a while, and it's dead now. 



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 09/25/2012 04:46 PM
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Putresopp
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I'm just happy it works again! i'll keep my good old HD5870 a few more days just incase ^^, 

Whats really weird is that it worked great for days, or maybe it just got worse and worse and i didnt notice is at first.... Anyway, thanks for the help guys!

 09/25/2012 05:02 PM
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Mime
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Inconsistant bugs are always the most annoying.  Especially when they're deep into the system in some driver or system library.  You've got to be a special kind of crazy to hunt bugs such as those, and actually like it.

[gollum]It burns us precious, it does![/gollum]



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