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Known issue

Very slow when connecting to Server 2008, 25% CPU usage

isaacg 3 years ago updated by Philip Seccombe 2 years ago 5

Using 6.1 connecting to Server 2008 R2 Standard performance is quite slow compared to other machines at the same site and other remote support tools. SC process cpu usage is 25%. Found an old forum post that suggesting blanking the guest screen. This does solve the slowness issue but still annoying having to do that and wait for server to catch up. Common thread between that use and my case is a Matrox G200 graphics chip so my guess is some sort of driver issue.

ConnectWise Control Version:
Server Affected:
Host Client Affected:
Guest Client Affected:

Answer

Answer
Known issue

Good morning,


The Matrox G200 graphics drivers are the most likely culprit in your case. While blanking the guest monitor is one method of improving performance while connected to guests with Matrox drivers, another option is to uninstall the Matrox drivers and use basic VGA drivers instead.


While this continues to be a known issue, I have added your comments regarding slow performance while connected to guests with Matrox drivers to our internal tracking system.


Regards,

Ben

Answer
Known issue

Good morning,


The Matrox G200 graphics drivers are the most likely culprit in your case. While blanking the guest monitor is one method of improving performance while connected to guests with Matrox drivers, another option is to uninstall the Matrox drivers and use basic VGA drivers instead.


While this continues to be a known issue, I have added your comments regarding slow performance while connected to guests with Matrox drivers to our internal tracking system.


Regards,

Ben

Hi,


I'm also experiencing this issue.  If you turn off hardware acceleration in the display settings there is an improvement in performance but not a drop in CPU usage.  Also, make sure the colour depth is not set at 32 bit.


I also experienced speed issues using LogMeIn on this type of display adapter.


Regards

George

Good afternoon George,


How many cores does the Windows 2008 R2 machine you're connecting to have? We identified an issue in 6.2.12963 where the guest client will consume 25% of CPU resources regardless of the driver installed if the guest OS is older than Windows 8 (e.g. Windows 2008 R2) and the guest machine has four or more cores.


The fix for this issue should be resolved in the 6.3 release.


Regards,

Ben

Hi Ben,


This box has 4 cores so looks like it is affected. I was just saying that I also had this issue when we used to use Logmein on machines with the Matrox driver.  Since most of the machines were headless we removed the matrox driver and installed the standard VGA driver and it worked fine so I'm guessing the Matrox driver just doesn't want to play ball.


I'll let you know if the problem goes away with the 6.3 release.


Thanks

George

I've got this issue with an IBM X3250 M2 that I'm just using at home, using the standard driver fixes the problem.

Although I note from the product guide, it says that the card supports up to 1024x768 only. This is likely the reason we're having issues, I have an older 19" wide Lenovo monitor and it was lagged at 1280x1024 and 1440x900.

Heres what the article said:
"Dual video ports — A Matrox G200eV SVGA video controller provides up to 1024x768

resolution, with a color depth of 32 bits at 85Hz refresh rate. To simplify local systems
management, one video port is provided on the front of the unit and one on the back. "