Thanks for the help. I'm sorry if it sounded like I'm giving up at the first sign of trouble. I installed Windows 10 almost 4 weeks ago, and have been working on fixing the lag ever since. Every day, I search online for more help. I even created an Avast Support Ticket because some issues seemed to go away when I disabled or uninstalled AIS.
But unfortunately, nothing is fixing the crippling lag I get a few minutes after playing any offline or online game.
If I revert back to Win7, I'll use the AvastClear tool to uninstall, then do a clean install again. Thanks again!