Depends on the time. If early morning hours, yes I-75 will be the best bet through ATL. Several hours prior to the game starting, I-75 will be a nightmare north and south bound. I-285 will be backed up and slow around I-20 either eastside or westside. I-20 / I-75 connector would not even consider a few hours before the game. If you'll be coming through in the weeeeeeee hours of the night / morning, then you should be good to go. Anytime after 6:00 p.m. until about the third quarter on I-285 (East) to I-675 around the southside of ATL back to I-75 South will be the best bet.
If you are coming I-75 S and would prefer a stress free route around ATL.
Exit I-75 at Commerce/441 South to Athens GA. Stay on 441/129 to Madison. Take Business 441 thru Madison, pick up GA 83 South to Monticello and continue to Forsyth.
Dumps you out just North of Macon and is a nice drive.