R9 270 problem with Starcraft 2

Shlouski

VIP Member
I built a computer to use in Thailand, here are the specs:

A8 6600k @ 4.8
Gigabyte F2A88XN-WIFI
Club3D R9 270
Kingston DDR3 8Gb 1600 CAS 11 @ 1866 CAS 12
Corsair VS650
2x Samsung 250Gb 850 pro
Sandisk Flash drive 64Gb USB3

I'm getting terrible performance in SC2, even at lowest settings my card was barely able to run the game, although all other games were running just fine. I discovered that the reason for this low performance was because the card was not throttling up and just stayed at idle clock speeds. I loaded SC2 up in windowed mode while MSI afterburner was running and saw that the cards clock speeds jumped around a little, before settling back down to idle speeds when i was ingame, this means the card is running with only a gpu clock of 300mhz and a memory clock of 150mhz, instead of 955mhz and 1400mhz. Does anyone know how to force the clock speeds or get the card to throttle properly with the game?

I ran out of space on my ssd's so I installed starcraft 2 and a couple of other games on to the sandisk flash drive. Crystaldisk shows that the flash drive has a sequential read of 145 MB/s and write of 30 MB/s and it runs the other two games just fine, so I'm sure its not the cause.
 
I'd check cpu utilization, StarCraft is noticeably more horrible on AMD platforms
 
Cpu utilization is under 30% most of the time. My q9550 never had any problems running SC2 maxed out with my GTX680 and the a8 6600k scores better than my a8 6600k in all the benchmarks I have done. I'm sure it just the graphics card, as much as I like AMD, I don't get anyway near as many problems with nvidia.
 
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