Thank you for posting your ram kit.
It is not a good idea to mix 2 kits even though they are rated at the same specs. Sometimes they don't play nice together. This could be what is going on here. it's always best to buy a single kit of the capacity you want, this will save you some headaches.
If you have XMP enabled, try setting up your ram manually, doing this might let the 2 kits work together better. I say might because there is no guarantee.
You could also try raising the Dram voltage a touch.
If none of this helps, you could get a G.Skill trident X kit, I can vouge they work without issues.