Ever since I got my r9 380, I've been getting abysmal framerates(<20) in specifically Minecraft. After a bit of digging, I've found that the GPU simply doesn't boost to 3d clocks, remaining at around 300Mhz while playing. it isn't a CPU problem either, it remains at around 50% while playing. For some reason, Minecraft is the ONLY game it does this in. All other games it boosts and runs just fine. I've allocated 4gb to it as well. Help!
GPU: AMD r9 380 Windforce
Windows 7 x64
Crimson Drivers Version 16.7.3
Dell 2005FPW | 1650x1050 | 60hz | DVI as main, Dell 1707fpc | 1024x1080 | 60hz | DVI as secondary
Motherboard: Gigabyte P55A-UD3
CPU: Intel I5 750
PSU: Thermaltake W0319RU 850W
Navigate to Radeon Settings > Gaming > Global Settings and set Power Efficiency to Off.