My Genius wireless mouse is very slow only when I right click on the timeline or when I right click n drag from project media. Everywhere else in Vegas is fine.
I'd be curious to know the relative time it takes to change the focus to the track where you right-click on the timeline compared to the time it takes Vegas to present the context sensitive right-click menu.
Do you have a lot of system background activity going on like Windows automatic updates? A lot of maintenance went out in the last couple of days.
It takes 3 seconds before the menu comes up. There is no other app running beside anti-virus. Also disconnected from internet. Task manager show no major activity. I'll check for a later driver.