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Performance problem with serial port on Win2012-R2 server

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Last Modified: 2016-01-25
Hello Experts

Performance problem with redirect serial port on Win2012-R2 server.

Our application is installed on Win2012-R2 server.
We start from Win7-client a remote desktop session.

Application has to sends data to a device over the serial port.
Device is connected to the serial port on the client machine.
The serail port is redirected from server to client (see screenshot).

The redirection of the serial port to the client machine works but is very slowly.
A request/response takes up to 3 seconds.

Similar configuration with Win208-R2 server works properly.
In this configuration takes a request/response appr. 100 miliseconds.

Do you have any idea what could cause this Problem ?

Thx
guenter
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