Choppy with 1080p playback, 720p fine

[SiqMawsh]

Hi, I am having problems with playback of 1080p movies. It's the first time I've tried 1080p movies and it is consistently choppy and lags during playback. When I play 720p movies it works perfectly.

I play the movies off my computer via hdmi cable to my toshiba 40" 1080p tv.
While playing the 1080p movie my cpu usage is at 32% and ram is about 50%.

My computer:

Windows Vista Home Premium 64 bit
Processor: AMD Phenom(tm) 9750 Quad-Core Processor (4 CPUs), ~2.4GHz
Memory: 4094MB RAM
2x ATI Radeon 3870iceQ 512mb video cards
SoundBlaster X-FI Xtreme Audio soundcard

Most searches I have found have blamed 1080p playback on hardware trying to keep up to playback but I don't think that's my problem...Help!

[Jean-Baptiste Kempf]

Yes, 1080p are usually too difficult to decode with VLC.

First, use VLC 1.0.0 dev versions
Second, deactivate loop filtering (set it to all).

[Rob456123]

Yes, 1080p are usually too difficult to decode with VLC..

This is not true at all. I've been using VLC since .86b to run 1080p MKV's back when I had my Core 2 duo E6600 with 2gb and an 8800gts.

Sorry I can't comment on your problem other then to say check your driver versions, but the type of hardware you have in coordination with VLC is definitely not an issue.

[Jean-Baptiste Kempf]

I will give you some 1080p at 30Mbps and you will not decode them with VLC.