AVI files are stuttering, MP causing high CPU load

[imported_patos]

Windows Version: XP SP2
CPU Type: P4 1,6 GHz Northwood
Memory: 512 MB
Motherboard: MSI 865PE Neo2
Motherboard Chipset: Intel 845PE
Motherboard Bios: latest
Video Card: GeforceFX 5200
Video Card Driver: 91.31
Sound Card: Intel ICH5
Sound Card AC3: Realtek ALC655
Sound Card Driver: 5.10.0.6030
1. TV Card: Anubius Typhoon 50689 (KNC1 DVB-S CI Clone)
1. TV Card Type: DVB-S
1. TV Card Driver: BDA 4.7.5.1 (wiki modified)
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
Video Codec: Cyberlink PowerDVD 6
Audio Codec: Cyberlink PowerDVD 6
Satelite/CableTV Provider: Astra
HTPC Case: standard case, nothing special
Power Supply: svideo
Remote: IR Keyboard
TV: Sony Wega CRT
TV - HTPC Connection: Svideo


Well, I've been experiencing since pre-0.2 svn buids and still in 0.2.0.3 some stuttering while playing avi files (xvid/divx). Mediaportal spikes to use all availiable CPU resources, the video will stutter for some seconds. I made a screenshot from process explorer showing the exact time it happened. It occurs sporadically 1-3 times during video playback.

Edit: I pinpointed the wrong spike in Process Explorer. The pinpointed one is the last while me closing it. Please substract 15-20 seconds from time in Process Explorer

Edit 2: Again, same error. Uploaded as patos2.zip. This time I pinpointed the time right and inserted the screenshot into the zip.

Thanks for the hints,

Patos