I solved my problem by assigning a macro to the wheel button. It plays 2 clicks of the right button with no time delay between.

It's a MS keyboard and mouse. Win 10 has ms keyboard and mouse v 2.0 driver. The latest driver.

Win 10 assures me it has the latest driver. It does work right handed, just not left handed.

I use left handed mouse, and swapping left / buttons works OK. I also set the wheel button to be "double click". But the wheel button brings up the context menu instead of double click.
If I change...