I've been at this for a while now. Disabling software on my computer, messing with the ram cache, uninstalling updates . . I just noticed in my testing that ALL "select" input is delayed. Entering platforms, selecting games . .its all sluggish. Animation & scrolling seems fine, but hitting "select" is not responsive. WTF is going on? There is a delay before the program realizes it. What's worse, if you continue "scrolling" after hitting select and before the program 'catches' your input, it will enter the wrong section.
This is unacceptable. I love LB & Big Box but to not have this basic functionality nailed down is absurd, and the response here has been severely lacking. It appears I'm on my own