Random frame drop after installing new motherboard

[Tall7kiwi]

Hey, guys. 

So just today I got my motherboard replaced due to a really wobbly SATA port. I got the new mobo and installed it (along with a new CPU cooler) and started playing BF4. I would normally get around 60+fps in-game but at random points it would drop down to about 15-20fps for about 2-3 seconds. With my old mobo I wasn't having this issue. I am not using Mantle as that has random fps drop as well. 

My specs are: 

- ASRock 970 Pro3 R2 mobo 
- Sapphire Vapor-X R9 270x 
- AMD FX 8320 CPU 
- 8GB RAM 

I am running Win7 but am thinking of upgrading to Win 8.1 since I've heard you get better performance with it. 

I have all the latest DirectX drivers up to date. I even tried a rollback driver version for the GPU to see if it would help - it didn't. 

What are your suggestions?

[EA_Bastian]

If you head over to your device manager in your Windows control center, is there anything causing trouble aka is not properly installed?

You should try to repair your Battlefield 4 installation by heading over to your "My Games" library, right-click on your BF4 icon and choose "Repair Install". 

Cheers

Basti