I upgraded to Windows 10 about a month ago, aside from the learning a new system issues I haven't had many problems. I first noticed issues with accessing my secondary drive (https://www.windows10forums.com/threads/windows-10-lagging-on-secondary-drive.4327/), then the programs started hanging up. Within the last week or so my computer's memory usage has been been at 98% and up. So much so that just switching from one program to another takes several seconds and opening a new program almost shuts down my computer.
Processor: Intel Core i5-3330 CPU @ 3.00 GHz 3.00 GHz
RAM: 8.00 GB (7.89 GB usable).
System type: 64-bit Operating System, x64-based processor
Processor: Intel Core i5-3330 CPU @ 3.00 GHz 3.00 GHz
RAM: 8.00 GB (7.89 GB usable).
System type: 64-bit Operating System, x64-based processor