FPS dips after 4690k overclock?

[Riddle]

So I recently overclocked my 4690k to 4.3 Ghz at 1.25v, however after the overclock I'm getting these random, very short fps dips (they might even just be skipping frames?) in games where my GPU usage goes down to ~40% (from 90% in BF4) for just an instant. I stress tested the overclock with Prime95 for around 3 hours and it seemed stable and temperatures were generally 50-60C. This issue is occurring in every game I try, but is especially bad in BF4, where my CPU usage is also strangely high at 90-100%. 

 

I tried reverting all bios settings back to what they were before the overclock as well as increasing the voltage to 1.3v, but sadly the fps dips still occur. Any help with this would be greatly appreciated. My components are:

 

-i5 4690k

-EVGA GTX 780 FTW

-EVGA Supernova 650G PSU

-Gigabyte Z97X-Gaming 5 Motherboard

-Coolermaster Nepton 280L Closed Loop Cooler

-8GB (2 x 4GB) 1600 Mhz Adata XPG v2 RAM

-Kingston SSDNow V300 128GB SSD

 

 

[Faceman]

Try reinstalling BF4 or use the repair utility through Origin.

[Queek]

@Riddle

I recently got a 4690K and noticed that my BF4 was stuttering and sometimes freezing.  It may have been partially to do with my slightly unstable overclock, but I don't think that's you're issue (4.3 at 1.25 should be a pretty conservative overclock for that cpu).  

I found that running the game in 32-bit mode improved my gameplay experience.  Maybe there's something about the new processors that the game engine doesn't like (don't ask me, I'm not a programmer).  You can change your game to 32-bit by right-clicking on the game in Origin and clicking properties.  There should be an option somewhere there to select 32 bit.  I can't remember off the top of my head but I think the options are Auto, 64-bit, and x86 (choose this one).  Anyway, give that a shot for BF4, it improved my experience for whatever reason.  

 

When you overclocked to 43, did you also overclock the cache?  These are unlinked on Haswell and DC processors.  This is just a guess, but perhaps a large discrepancy between the core and uncore is causing issues with heavy loads.  Try overclocking your cache (it is a similar process to overclocking the core ratio, but harder in the sense that it doesn't overclock as well).  

 

On a side note, Prime95 doesn't do a proper stress test on Haswell and DC chips (and should NEVER be run on anything other than manual voltage with these chips).  Because of the older instruction set used by P95, it doesn't really check if you processor can handle the speed.  I would recommend using AIDA64 (my choice) or Intel Burn Test if you want to do a synthetic test, but the only real check for stability is general usage.