@Brock- You are correct, Group Policy is not supported in Home SKUs of Windows.
Setting your pagefile to System Managed or around 16,384 MB should help with the warnings, if not necessarily making your system a ton more responsive.
If you want to deep dive into this, SysInternals Suite, specifically process explorer can show you what processes are consuming with more detail than Task Manager.
4GB is on the low side these days. Per the online specs, your computer supports up to an 8GB DDR3L SODIMM (have to replace what you have rather than adding to it). 16GB DDR3L SODIMMS do exist, but are not certified for your laptop. They may or may not work and are at a significant price premium over smaller modules.
Specs link for model given: