Jerky mouse - video - 3d

[TracyB]

I have a P4-3GHz with 1GB RAM and a 256MB Nvidia Graphics Adapter
running XP SP2.
Over the last few weeks I've been facing a strange problem. My mouse
feels really jerky and the videos stutter around too. I have updated
graphics card drivers installed & DirectX 9.0c.

The problem is there all the time but strangely enough seems to
intensify when I switch my Motorola Cable Modem off or the connection
drops from the ISP's side.

I don't believe I have any adware or spyware or viruses on mysystem,
my AV is updated and running constantly. I scan regularly for spyware
with 3 separate tools. The drives are defragged and the PC runs
beautifully other than these display related problems. I have got all
the system updates from MS. Just getting all this out so nobody
misunderstands the issue.

Today I seemed to get rid of the jerky PS2 mouse problem in a
roundabout way. (I tweaked the registry and raised the PS2 sample
rate to the max (200) first, but that didn't help.) Then I enabled
mouse cursor trails and kept the trail at the shortest setting and
Voila! - the mouse cursor seems to run smooth... but the movies are
terribly choppy when I clearly have enough CPU power, RAM and video
RAM to spare!

My DirectX is V9.0c installed OK - strangely enough when I do the
directdraw & direct3d tests from dxdiag the rendering is slow and
jerky with directx enabled but gets a lot smoother with it disabled.
But I can't keep it disabled as I have some 3d games. I have all the
video codecs in place too - the same videos used to run fine on my
machine some time back.

There's lots of processor power and RAM to spare. I've set the display
to 75Mhz and even went through some BIOS info sites and made sure
nothing was set wrong. I've been struggling with this problem for a
long time and can't seem to find any ready solutions online even after
scouring the Net for hours. I had a lucky break today with the mouse
trails but the core problem remains. I've run MS's memory diags on my
system memory and got no errors. Even tried rolling back to Directx
8.1 to no avail. My 3D acceleration setting (via display settings) is
set to full.

I am _completely_ out of ideas now! Any suggestions would be greatly
appreciated.

And could somebody please tell me what's the difference between the
acceleration settings available via the dxdiag app and that available
via the display properties?

Thanks!

 

[Gary]

|I have a P4-3GHz with 1GB RAM and a 256MB Nvidia Graphics Adapter
| running XP SP2.
| Over the last few weeks I've been facing a strange problem. My mouse
| feels really jerky and the videos stutter around too. I have updated
| graphics card drivers installed & DirectX 9.0c.
|
| The problem is there all the time but strangely enough seems to
| intensify when I switch my Motorola Cable Modem off or the connection
| drops from the ISP's side.
|
| I don't believe I have any adware or spyware or viruses on mysystem,
| my AV is updated and running constantly. I scan regularly for spyware
| with 3 separate tools. The drives are defragged and the PC runs
| beautifully other than these display related problems. I have got all
| the system updates from MS. Just getting all this out so nobody
| misunderstands the issue.
|
| Today I seemed to get rid of the jerky PS2 mouse problem in a
| roundabout way. (I tweaked the registry and raised the PS2 sample
| rate to the max (200) first, but that didn't help.) Then I enabled
| mouse cursor trails and kept the trail at the shortest setting and
| Voila! - the mouse cursor seems to run smooth... but the movies are
| terribly choppy when I clearly have enough CPU power, RAM and video
| RAM to spare!
|
| My DirectX is V9.0c installed OK - strangely enough when I do the
| directdraw & direct3d tests from dxdiag the rendering is slow and
| jerky with directx enabled but gets a lot smoother with it disabled.
| But I can't keep it disabled as I have some 3d games. I have all the
| video codecs in place too - the same videos used to run fine on my
| machine some time back.
|
| There's lots of processor power and RAM to spare. I've set the display
| to 75Mhz and even went through some BIOS info sites and made sure
| nothing was set wrong. I've been struggling with this problem for a
| long time and can't seem to find any ready solutions online even after
| scouring the Net for hours. I had a lucky break today with the mouse
| trails but the core problem remains. I've run MS's memory diags on my
| system memory and got no errors. Even tried rolling back to Directx
| 8.1 to no avail. My 3D acceleration setting (via display settings) is
| set to full.
|
| I am _completely_ out of ideas now! Any suggestions would be greatly
| appreciated.
|
| And could somebody please tell me what's the difference between the
| acceleration settings available via the dxdiag app and that available
| via the display properties?
|
| Thanks!
|
I had a problem with my parent's PC , that ,when scrolling the menus,it
would be jerky. I even went to the manufacturers site to download the latest
display drivers,reset the refresh rate,checked to make sure that the "enable
smooth scrolling" was set-nothing helped till I changed the hardware
acceleration down a notch. That seemed to fix the problem & now the the menu
scroll is like it should be ,without any jerky behavior whatsoever.
You would think that having hardware acceleration to the max would give you
optimum results ,but that was not the setting that their machine was most
happy with & gave the opposite affect.
~Gary