To me this sounds like a common Chrome complaint. Now I don't see it on my i7 CPU with 16GB RAM but Chrome is an untamed beast at times.
I can't tell you if this will help but some tell me it does. Try this:
i have a laptop series 15. configurations i3 6th gen 4gb ram 1 tb hdd, it is working perfectly. but when using google chrome it hangs sometime. can any one know about this issue. why using chrome for long time is ruined my system speed.