Do you have a decent computer? What windows are you using? Cause it might not be working correctly due to either having an older version of windows or having a below average pc might not be powerful enough to run UE4. I used to use a laptop back then and UE4 barely functioned on it.
Nah, hz don't matter. It's just if your PC specs are low-end or if you had an older version of windows like Windows XP, then it wouldn't work properly.
