The best way to squeeze extra performance out of any computer (but especially aged, underpowered computers) is by switching to a free/open operating system like GNU/Linux and replacing your proprietary, resource-gobbling apps with free/open alternatives:
www.fosslinux.com/158206/linux...
54/
fosslinux.com
Linux on Older Hardware: The Complete Revival Guide (2026)
Revive your old PC with Linux in 2026. I tested lightweight distros, zram tuning, SSD upgrades, and browser optimization on a 2014 ThinkPad to show you exactly what works.