I have a 2008 Bighorn Ram with the 5.7. Over the weekend when it shifts into OD it feels like it is lugging or shuddering. Just started it all of a sudden. Does anybody know what is causing this issue.

1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...