Basically, anything that requires anything more than a tiny amount of CPU time on my computer will have this slight stutter every second or so. It happens in games, watching videos, even gif animations and dragging windows, and is extremely annoying. >.>
The issue has persisted across formats, so I'm pretty sure it is a hardware issue rather than some background process or anything like that.
The graphs in Media Player Classic Homecinema do not register anything - they themselves freeze and continue as if nothing had happened. Likewise, FPS in games does not drop.
I'm thinking something pretty low level - perhaps a driver/interrupt related issue? Has anyone experienced anything like this before?
My specs are as follows:
Intel Core 2 Duo E6850 3.0GHz (with more than adequate cooling and no overclock)
Asus P5N-E SLI
4x1GB Corsair DDR2 @ 5-5-5-31
Asus GTX 275 (also not overclocked and at normal temps)
2x Maxtor 320GB hard disks in RAID 0
Semi-decent 650W Jeantech PSU
If you're not getting sudden high levels of cpu usage everytime the stutter happens then its most likely something to do with hardware. What you could do, is get an ubuntu live cd and see if the stuttering happens in that. If it does, then its 100% hardware. Otherwise if it doesn't stutter in ubuntu then either windows doesn't like your hardware or you have an odd driver in windows
Posting this from Fedora (prefer it to Ubuntu :P) which I just installed on a separate hard disk.
Sadly the same issue occurs - in the 5 or so 2d/3d games I tried, anything which scrolled across the screen and camera panning had that same characteristic lag. It was also very slightly present in video playback and compiz dragging effects :<
Guess I'll have to start pulling things and fiddling with bios settings >.>
Is it bad that my CPU Vcore varies between 1.41 and 1.44V when idle, and down to 1.38V under load?
[img]http://imgkk.com/i/8qld.png[/img]
Edit: Apparently my motherboard has a notoriously bad vdroop D:
what, even my i5 750 does not require 1.44v when overclocked to 4ghz
Did a quick pencil mod on my board (probably a bit too much given the voltage increase :P) and the problem is gone - vcore is completely stable and no more stutter :D
[img]http://imgkk.com/i/fwds.png[/img]
Plus I can now finally overclock to the 4.0GHz that my cooling should have allowed long ago :dance:
Looks like I spoke too soon... everything is still lagging horribly, and I have spent the best part of a month continuing fruitlessly to find a solution without new hardware.
[b]Even holding a key in a single user linux console lags.[/b] (It misses a 'frame' (character) every half second or so)
What do?
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