Give us your full specs, saying 8gb of ram and "a good hard drive" is not enough.
Freezing for a short time like that could be caused by driver problems, or with your cpu not being able to keep up with all the things you want it to do, leave task manager running and post a screenshot of the performance tab after you get freezing, if the cpu usage is spiking during the freeze it is something eating up your processing power, similar thing if the ram is getting used up.
Try iobit advanced system care 7, iobit defragger, iobit antimalware, and iobit driverbooster, run a hard drive defrag, run all the maintenence options in advanced system care 7 (except the registry ones), run a malware scan, and a driver scan, and then go into your...