Nvidia Driver 471.96 Adresses high DPC issues

[3xil3]

If anyone intested NVIDIA developer drivers 510.06 out just installed

https://old.reddit.com/r/nvidia/comment ... rcequadro/

so far so good

[3xil3]

Just download any 457 version

Can you link any credible resources for this claim? Is there a database for DPC latency w/Nvidia drivers?

Thanks!

> Some apparent driver latency spikes are actually due to smi's in bios, which go unnoticed and show that random drivers are at fault, sometimes it hits the graphics driver. (... a bit out of context, but might be worth knowing)

Think it has do with nvidia driver having so much CPU overhead you can try changing core for nvlddmkm.sys by unlocking *(inturrupt steering mode* with PowerSettingsExplorer cahnge default core workload or use Ilatencymon and see what core get least dpc hits and change videocard to use those cores with Interrupt_Affinity_Policy_Tool.
Id recomend trying windows 11 if you havent already even in currect state i find much better than 10 for games. Instead on just core 1 being hit they spread it across multiple cores. Resulting better perforamnce in CPU demanding games.

[aerin]

Just download any 457 version

Can you link any credible resources for this claim? Is there a database for DPC latency w/Nvidia drivers?

Thanks!

> Some apparent driver latency spikes are actually due to smi's in bios, which go unnoticed and show that random drivers are at fault, sometimes it hits the graphics driver. (... a bit out of context, but might be worth knowing)

Good to know!

If I recall correctly one has to ask for a custom bios that's SMI free? Am I remembering that correctly?

That's not always the case, you can use AMISCE (https://drive.google.com/file/d/1NXmfVV ... sp=sharing).
Export your BIOS settings as a .txt file via Export.bat. Then edit "Biossettings.txt" and disable any smi's you see by deleting the askterisk (*) and setting it to the state of the setting you want it to be.
For example, you have this smi:

Setup Question = USB ecc SMI Enable
Token =1C2 // Do NOT change this line
Offset =1BE
Width =01
Options =*[01]Enable // Move "*" to the desired Option
[00]Off
[0F]Auto

But you want it off, so you change it like this:

Setup Question = USB ecc SMI Enable
Token =1C2 // Do NOT change this line
Offset =1BE
Width =01
Options =[01]Enable // Move "*" to the desired Option
*[00]Off
[0F]Auto

After changing all desired settings you save the file and run Import.bat (then reboot).
Now the given settings have been changed.

*Sidenotes:
> SceWin may or may not include hidden BIOS settings
> There is some more UEFI tools that should not be used unless you know what you're doing
> You may have to test which SceWin version works for your board
> SceWin won't funtion without (amifldrv64.sys) in the same directory
> SceWin probably won't work on outdated boards and / or BIOS'es
> If you change a "bad value", you may have to clear CMOS (tutorials on youtube)
> After rebooting from a successful modification you'll have to delete the old "Biossettings.txt" file and re-export it in order to change settings again
> Depending on board / BIOS not all settings could be visible
> Batch files should be run as administrator or with UAC disabled
> Batch files will not work with SceWin running at the same time

That's it. Enjoy a (hopefully) smi-free experience.

~aerin0x01

[SixRavens]

That's it. Enjoy a (hopefully) smi-free experience.

~aerin0x01

Should it work for every motherboard? And how safe is that?
It sounds like a world of pain if we are to mess something up)

[aerin]

That's it. Enjoy a (hopefully) smi-free experience.

~aerin0x01

Should it work for every motherboard? And how safe is that?
It sounds like a world of pain if we are to mess something up)

Should work for most boards, but it's recommended that you test multiple versions of SceWin to be safe.
Also, messing up shouldn't be too much of a problem as long as you know how to clear CMOS (takes 5mins max).

[deama]

How was the DPC on 457.30?

[BTRY B 529th FA BN]

Can you link any credible resources for this claim? Is there a database for DPC latency w/Nvidia drivers?

Thanks!

> Some apparent driver latency spikes are actually due to smi's in bios, which go unnoticed and show that random drivers are at fault, sometimes it hits the graphics driver. (... a bit out of context, but might be worth knowing)

Good to know!

If I recall correctly one has to ask for a custom bios that's SMI free? Am I remembering that correctly?

That's not always the case, you can use AMISCE (https://drive.google.com/file/d/1NXmfVV ... sp=sharing).
Export your BIOS settings as a .txt file via Export.bat. Then edit "Biossettings.txt" and disable any smi's you see by deleting the askterisk (*) and setting it to the state of the setting you want it to be.
For example, you have this smi:

Setup Question = USB ecc SMI Enable
Token =1C2 // Do NOT change this line
Offset =1BE
Width =01
Options =*[01]Enable // Move "*" to the desired Option
[00]Off
[0F]Auto

But you want it off, so you change it like this:

Setup Question = USB ecc SMI Enable
Token =1C2 // Do NOT change this line
Offset =1BE
Width =01
Options =[01]Enable // Move "*" to the desired Option
*[00]Off
[0F]Auto

After changing all desired settings you save the file and run Import.bat (then reboot).
Now the given settings have been changed.

*Sidenotes:
> SceWin may or may not include hidden BIOS settings
> There is some more UEFI tools that should not be used unless you know what you're doing
> You may have to test which SceWin version works for your board
> SceWin won't funtion without (amifldrv64.sys) in the same directory
> SceWin probably won't work on outdated boards and / or BIOS'es
> If you change a "bad value", you may have to clear CMOS (tutorials on youtube)
> After rebooting from a successful modification you'll have to delete the old "Biossettings.txt" file and re-export it in order to change settings again
> Depending on board / BIOS not all settings could be visible
> Batch files should be run as administrator or with UAC disabled
> Batch files will not work with SceWin running at the same time

That's it. Enjoy a (hopefully) smi-free experience.

~aerin0x01

Thanks for the reply. I might have more questions for you later,

Cheers!

[3xil3]

After changing all desired settings you save the file and run Import.bat (then reboot).
Now the given settings have been changed.

*Sidenotes:
> SceWin may or may not include hidden BIOS settings
> There is some more UEFI tools that should not be used unless you know what you're doing
> You may have to test which SceWin version works for your board
> SceWin won't funtion without (amifldrv64.sys) in the same directory
> SceWin probably won't work on outdated boards and / or BIOS'es
> If you change a "bad value", you may have to clear CMOS (tutorials on youtube)
> After rebooting from a successful modification you'll have to delete the old "Biossettings.txt" file and re-export it in order to change settings again
> Depending on board / BIOS not all settings could be visible
> Batch files should be run as administrator or with UAC disabled
> Batch files will not work with SceWin running at the same time

That's it. Enjoy a (hopefully) smi-free experience.

~aerin0x01

So wait i found HPET with this i edited from enabled to diabled saved and imported then reboot and exported settings again and still says disabled? SO this just disabled HPET without BIOS modding? Still showing device manager even after uninstalled.

Edit

This really seem working everything feels great and consitent now. I can run OSD software...ect i no longer feel poling in CPU when gaming pushing system hard everything perfect. latencymon is all low even nvidia with power set to optmial. Prior had set max performance or latency spikes.

[SixRavens]

So wait i found HPET with this i edited from enabled to diabled saved and imported then reboot and exported settings again and still says disabled? SO this just disabled HPET without BIOS modding? Still showing device manager even after uninstalled.

Edit

This really seem working everything feels great and consitent now. I can run OSD software...ect i no longer feel poling in CPU when gaming pushing system hard everything perfect. latencymon is all low even nvidia with power set to optmial. Prior had set max performance or latency spikes.

Still consistent? Have you disabled HPET only or followed the whole part through?

[BTRY B 529th FA BN]

How's that 510.06 Driver doin? I tried it briefly but went back to 471.96