Guild Wars 2

Been recording some GW2 gameplay with DXTory using Lagarith Lossless Codec. It seems whenever I record at 1920×1080 (native screen resolution) at 29.97 FPS, in-game the game responds really slow. Its not FPS lag or anything. I can attack a monster and kill it and still receive damage, but all the effects and audio would play some 20-30 seconds later. This doesn’t seem to happen when I record at 720p or 900p. Any ideas?

Specs:
i5 3570k
GTX 670
Harddrive writes of 110 MB/s
SSD for OS drive

I’m also running fancycache for my harddrive (same one GW2 is installed on) with a 512MB cache.

My idea is to use MSI afterburner or fraps to test if the same problem happen while using those programs.

Sounds to me like 1080P cpu bottleneck for capture/recording.
Try a different program, or get a capture card !

Burner.1643:

Sounds to me like 1080P cpu bottleneck for capture/recording.
Try a different program, or get a capture card !

Problem with a capture card is that 99% of the use H.264 encoding, while I prefer lossless recording (Unless h.264 has lossless options?). Also, do capture cards capture only the game, or whatever is on the screen? I alt tab frequently, so would it also record my desktop?