Your family can give you the current times. I also have family just North of Charlotte and have traveled the I77 route many times, through the Charlotte area. I travel the I85 route when we are in the coach. I put the coach at Fleetwood CG at the Lowes motoer speedway. If you have no place to put the coach, check this CG out. Unless it is a race week, it is very reasonable.
Back to your question, from about 6:30AM throught 9 AM and from aboput 3:45 PM through 7 PM at night. It's the same for any large metro area. When the locals are in their commute, one does not want to be on the road at the same time.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours