Discussion Gpu fan decreases to 65% while set to 100%

Jun 20, 2019
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My graphics card is a VTX3D HD6870 V2. Usually I manually set the fan speed to 100%. When I launch a game like Dead by Daylight, midway through the game the graphics card's fan slows down to 65% speed and the catalyst control center stops responding. This has caused the card to overheat once already and i need this resolved. Please help.

OS:Windows 10 Enterprise