Need some advice

Ok I am not sure what I happened but let me explain. I was driving to mickey d's and the car was doing fine. I waited at idle for about 20 minutes then took off. As soon as I hit the highway the engine started skipping bad. I thought maybe I was out of gas because my gauge doesn't work quite right. Nope it was fine. On my way home I try a few things. First I try hard acceleration and the engine starts skipping and sputtering and nearly dies. Then I try a light steady acceleration and it seems to handle that fine. I noticed my alternator was showing a little low while I was doing this. I checked the plug wires and none are loose. I tried to make it happen while parked and it didn't happen at all. Can anyone direct me as to where to look?

I did adjust the timing a few days ago but I am back to 12 degrees. I also adjusted the high idle down a little but maybe half a turn in total.