45FPS but choppy gameplay with Fraps?

Wasn't too sure on how to categorize this problem since I don't know what the problem is. Here's my specs

* Phenom II X4 940 @3.0Ghz
* 8GB DDR2 - Geil & Kingston OC 15%
* 1 TB Caviar green HDD
* XFX HD Radeon 6850 1gb
* Corsair CX600w

The GPU and PSU are new. Now here's the problem.

Crysis 2 -

Without Fraps : 60fps
With Fraps : 45fps

Diablo 3 :

Without fraps : 75Fps
With fraps : 45Fps

So they seem like reasonable Frames to be playing on and the gameplay should be reasonably smooth right?

Well when I play either of those games the gameplay is still not 100% smooth like I think it should be (Correct me if I'm wrong) but the problem is that every 2-3 seconds the frame drops to about 15fps and rapidly goes back to 45Fps leaving me with a choppy spiky gameplay. Same goes with recording except for it's worst. So I was thinking maybe it's my HDD which is rather slow? So I tried recording into an External HDD 500GB and I think that helped it slightly but it is still rather choppy and quite annoying to play with. So what do you think the problem is?

Also just to clarify , I don't have any major programmes running while I'm playing. Just my Antivirus in Gaming mode , Skype and Google chrome.
3 answers Last reply
More about 45fps choppy gameplay fraps
  1. I'd also like to add this.

    http://gyazo.com/66df2f224153e50eae8bf4bdff9118da

    And this

    http://gyazo.com/13f89bf7eac3168ee1bc73b3b5ddca90

    Don't worry about the Gyazo links it's a screen capture programme.
  2. i would reccomend a 60$ SSD, you will see much less FPS drop due to the uncompressed nature of FRAPS http://www.newegg.com/Product/Product.aspx?Item=N82E16820167120
  3. You just need a second Sata 3 7200rpm harddrive,
    and dont bother with FRAPS, use DXtory, much better
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