Game Capture FPS Problem?

So as if right now i'm trying to record Minecraft. Without recording on the map i'm trying to record on I get an average of 700 - 800 fps. In my recording program I cap the recording to 60. But when I start recording my fps goes to these:
Dxtory = 32 STABLE
Fraps = 50 STABLE

but when I first got my new pc I tried and was recording at 60 fps. I'm confused can someone help me?

Dxtroy uses cpu encoding for recording videos. This causes it to use a LOT of cpu cycles. If you are seeing large drops in fps when recording, your cpu is not fast enough to record while playing games and running everything else that is running at the time.

Fraps doesn't encode videos at all (which is why a 30sec video is like 1GB in size lol), so it uses far less cpu resources thgen dxtroy.

You likely have more things running in the background now then you did in the fast which is using cpu resources. It could also be to your cpu underclocking itself or not hitting turbo boost due to things like heat/power constraints.

https://obsproject.com (get the multiplatform obs studio. The original windows version is no longer being updated) is by far the best recording software available. Its able to do gpu encoding so you can encode videos and compress them while recording and it uses your gpu power rather then your cpu power. This results in next to no fps loss while recording. (NVENC = nvidia gpu encoder. Quicksync = intel gpu encoder, VCE = amds gpu encoder. Use the one relevant to what gpu you are using).