Hi! My rig is as follows: i5-3570k Sapphire R9 290 reference 8GB ram Windows 8.1 Pro When I use GPU-Z my GPU starts throttling frequently (see the pictures). Resulting this (white lines of the core and memory clocks are the throttles): http://aijaa.com/NCvR9X The exact moment of a throttle: http://aijaa.com/pntucK This doesn't happen, if I don't execute GPU-Z. Before anyone says that this is temperature related, it is not. As my temperatures were (76-80°C) far inferior to my temperature target (88°C) and with out GPU-Z I don't experience the throttling. This can be reproduced easily by just executing GPU-Z 0.7.5. when ever I'm stressing the GPU. The throttling occurs even when down clocked (for example to 700MHz) and drops the core down to 300MHz causing fps drops etc.