Latest drivers? Have you tried catalyst application profiles? Fixed some issues for me, mostly fps related tho.

I think i found how to fix it, was playing Black ops without any crash for a hour.Ppl say there is some problem with the 2D and changing those values fix the problem
I had to make a profile and edit it like this :


<Profile>
  <Caste name="Graphics">
    <Groups>
      <Group name="Overdrive5">
        <Feature name="TimeUnlocked" />
        <Feature name="OverclockEnabled">
          <Property name="OverclockEnabledProperty" value="True" />
        </Feature>
        <Feature name="AutoTuneSupport" />
        <Feature name="CoreClockTarget_0">
          <Property name="Want_0" value="30000" />  This was 15700
          <Property name="Want_1" value="55000" />
          <Property name="Want_2" value="72500" />
        </Feature>
        <Feature name="PowerControl_0">
          <Property name="Want" value="0" />
        </Feature>
        <Feature name="MemoryClockTarget_0">
          <Property name="Want_0" value="50000" /> this was 30000
          <Property name="Want_1" value="90000" />
          <Property name="Want_2" value="100000" />
        </Feature>
        <Feature name="CoreVoltageTarget_0">
          <Property name="Want_0" value="950" />
          <Property name="Want_1" value="1038" />
          <Property name="Want_2" value="1088" />
        </Feature>
        <Feature name="MemoryVoltageTarget_0">
          <Property name="Want_0" value="0" />
          <Property name="Want_1" value="0" />
          <Property name="Want_2" value="0" />
        </Feature>
      

Tested the one that came with on a CD with the card, no change and all this cleaning the 10.12 one, installed and 10.10.The good news is the card is ok now.Some say that this started after a windows update but i dont belive.If you right and its an error of ATI, it will be in all the drivers i download frim the Sapphire website coz i guess they tweak and the oldest versions.The only change i see now is the clocks in que were GPU Clock 100 Momory clock 300, now they are 300 and 500.

Yeah heard about that to, found none of the updates that cause the problem for other ppl in my windows, anyways its fixed and i hope this helps other ppl some day.