Input lag on 40in LCD question

[OkitaMakoto]

Hey all,
I'm pretty much set on there being no fix for this but just wanted confirmation/an explanation.

Ive got a 40in 1080 capable TV (Dynex DX-40L260A12, cheap, I know) set up through HDMI to my PS3 for gaming and Netflix. It runs fine, no input lag, etc.

Now, I just wonder why when I sent my laptops image through the TV through the same HDMI cable that it creates really noticeable input lag. Is there a way to stop this? Writing this now, I wonder if disabling AA and the like will fix it... is that it? Would it make sense that going from laptop to TV and wanting it to run AA would have an effect on the speed at which the image is processed/sent to TVs output?

Games are playable but most certainly not competitively as the lag on FPS is too much. Oblivion was nice, but still you can really feel the lag in the display.

Is it down to needing to disable AA or will that not fix anything? is it just the TV cant handle running a computers monitor for some reason but can handle the PS3 just fine?

Anyway, any help or explanation would be great. Cheers!

[OkitaMakoto]

1080 and 1080 should be the same, right? 1920 by 1080 or whatever the resolution for 1080 is...

Hmm, ill keep fiddling, but yeah, its disappointing and annoying

[OkitaMakoto]

There are some PS3 games that run at true 1080... at least thats what I always thought. I know some just upscale the 720(obviously) and say it is outputting 1080.

I can try dropping down the resolution on the laptop and see if it makes a difference. Ill post back.

Any idea if disabling laptop AA/post processing effects on games would allow it to display quicker on the TV? I dont know if thats technically logical or not

[OkitaMakoto]

I turned off all the TV's ""noise reduction" and smoothing effects and everything runs great now. full 1920x1080 res. Thanks for offering up advice though. I kept reading about "gaming modes on TVs to turn all that off. Mine doesnt have one so i just had to turn it all off manually.

[OkitaMakoto]

Yeah, thats what I was wondering all along. Itd make sense if it was causing input lag on both the PS3 and laptop through the same HDMI cable.. I dont know. Unless something changed since the last time I tried it (nothing I can think of aside from turning off smoothing, etc)