8gb enough unless you use chrome with many tabs open
You can try to monitor the usage of the page file, and track hard faults.
If you have a high rate of page faults combined with a high rate of page reads (which also show up in the Disk counters) then you may have an issue where you have insufficient RAM given the high rate of hard faults.
https://blogs.technet.microsoft.com/askperf/2008/06/10/the-basics-of-page-faults/
sounds good. how exactly to find this info? the cache fault?
i only can see the live monitoring. thanks a brunch
Memory\ Page Faults /sec, Memory\ Cache Faults /sec and Memory\ Page Reads /sec.