Slow response mouse

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I have a laptop running Windows 10   Insider edition. Remote PC is Win 10 Pro desktop (not insider)..

When I remote control the desktop, the mouse gets herky-jerky, unresponsive or slow to respond. Sometimes it takes 5 seconds to 10 seconds between moving mouse to when the pointer on screen moves accordingly. 

Behavior continued after a major feature update on the laptop. Reboots don't help. 

Where should I look/what should I do next?