Comment by dataflow

Sure thing. Probably the highest-RoI changes performance-wise (there may be negative implications for security or functionality, obviously proceed at your own risk) are to disable the various services and drivers that belong to either Windows Defender or the various filesystem filter drivers on your system. You can't disable everything (expect a freeze/crash if you disable the wrong ones) but you can disable most.

That, and switch back to the classic GUIs (like with OpenShell) so you don't have to deal with the laggy new UIs.