So I have a gigabyte r9 280 and when I am gaming it is working at idle (950 MHz) instead of 1072 MHz which is the frequency in which it is supposed to work in graphics-demanding programs and this causes low fps and stuttering in my games (and no it's not because the gpu is weak, because I could play equally demanding games with many more fps a while ago when I didn't have this problem). I have tried overclocking it with different software, including the AMD Radeon settings, but the frequencies won't change. Thanks in advance