>I don't do much VFP work anymore, but for the past few days I've been working on a VFP/SQL Server application that involves a lot of Excel automation.
>Several times I got messages saying the computer is running low on memory (I have 16GB and tons of disk space with Win 10) and several times I had to reboot because everything was running slowly.
>I don't have these issues when doing .NET or PHP work.
>It might have nothing to do with VFP, but are they any known issues?

embolded part - if interpreted meticously - says even after killing vfp tasks vial kill or task manager machine was unresponsive ?
Correct or were you just impatient and did not want to wait for task manager to pop up iwhen running with brakes on?