Here you go
Alright, that gives some useful information.
- So, of the 8 GB RAM, 585 MB is reserved for exclusive use by hardware - a majority of this would be the GPU.
- That means that the RAM available to Windows is 7.4 GB, of which 5.5 GB is in use, leaving 2 GB free. That is not bad in itself.
- Likewise, the GPU tab shows that some of this 7.4 GB RAM is being used in a shared manner by Windows. Windows has set aside 3.7 GB RAM for GPU duties, but this is not exclusive, it will scale around as required.
In all, I don't see anything of major concern here.
Couple of other questions - are you running an SSD or HDD? A feeling of hanging can occur when a HDD is being hammered by lot of IO, or if its trying to retry reading a bad/failing sector.
Have you unplugged any other peripherals and left just the bare minimum (mouse + KB + display) to see if there's any difference?
By any chance, is your swap file disabled? (Disabling it is not a good idea in general, unless you know exactly what you're getting into and why you're doing it).