So here is a a really strange one.
I have a LabVIEW program in LV 2017 SP1 that runs perfectly well on Windows 7 PCs.
Now the customer has installed it in a new system running Windows 10 and attached the USB keyboard and mouse through a KVM which seems to have an integrated USB hub, i.e. USB keyboard and USB mouse into KVM, one USB cable to each of the PCs.
Keyboard and mouse work flawlessly on the PC in question until my software is started. Then the mouse intermittently hangs/lags and the keyboard intermittently becomes sticky. Intermittently is in the 5 to 10 second range for about 1 second.
If the software is switched into simulation mode the keyboard and mouse work just fine.
The only other USB device on the PC is an cDAQ-9174 chassis with a 9215 and a 9211 module.
As soon as communication with that device is started the interference starts.
When the mouse and keyboard are plugged into the PC directly the interference stops.
When the mouse and keyboard are plugged into the PC through a different USB hub the interference is back.
We update the drivers to 19.5 without any change.
Does anyone have any idea what else to try?
I am currently building the software in LV 2019 SP1.
