What revision is the board and what APU are you using ?!
The board itself is problematic as it seems it is not able to do some things that it should ,some reported by others some observed also by me using it.
I have bought this board version 1.1 myself some good months ago for a 5600K APU.
The best BIOS for it was F5..Prior to this BIOS i have had the default one ,F4 or F3 (can t remember exactly) and the board was purely unusable due to instability,
F5 by default it is also unstable ,but you can make this one work even with Turbo On for the APU , if you customize the LLC levels for NB and CPU and if voltages is added in a small amount to both.It allows overclocking too.
I have also tried the F6e and it s unstable with turbo on ,PC resets itself randomly.
F5 with small tweaks allows you to use the APU closer to the specifications it has but you need to adjust stuff.
This one allows you to also set a fixed NB clock as by default that one bounces like a nut from 1500Mhz and up mostly staying under the required level for full performance.This BIOS does not allow you though to have dynamic iGPU clocks the GPU stays at fixed clocks at least this is what looked to do.
F6e allows you dynamic GPU clocks ,lower GPU clock for idle and low activity ,but trying to use the turbo core makes the PC unstable.You can use though a fixed target clock for the CPU to overclock with no problems with the same LLC and voltage tweaks.
Using fixed NB clocks with F6e is not possible though ,they bounce ,but they do go higher when needed than with F5 so not much performance penalties are present.
This F6e also shows all kinds of strange huge CPU temperatures into in ANY software you can find ,SpeedFan ,HW Info HW ID or any other 3-rd party software you can find around. .
The BIOS support for this board or at least for version 1.1 i have is purely pathetic and maybe the worst for any motherboard i have owned ever
If you are using a supported APU by BIOS F5 stay with it and set LLC on medium for both CPU and NB ,add a 0,025 or 0,030 to those voltages ,set manually the memory timings and see what happens ,otherwise ,if possible ,get something else.
From the 2 AMD FM2 A75 based chipset boards in my signature the better one is not the Gigabyte in spite of the overall nice features and better onboard sound.
The BIOS team really needs to put their _ together when it comes to AMD boards at least for the last 3-4 years or so.
After a great 770-UD3 i have had a 890GPA-UD3 ,that was working but had only 4 BIOS releases (and a full compatible AM3+ socket that could nt be used due to lack of BIOS support) ,then a 970A-UD4 that also had 8 releases that never helped with any bug i ve seen.
RMA if F5 with LLC /voltages tweaks don t help.
