I would look to your diet than brother.I know you said you're eating 6 meals a day but maybe its the content of those meals that are the culprit.Its especially true to bbers who are on a restricted diet to feel this way and AAS use can impound this.Are you keeping track of your daily macros? It may need some fine tuning.Start playing with your carb numbers and see how this helps.
Ive always been very very active and personally have higher carb requirements than many others and whenever ive been on a lower carb diet,ive felt like shit.
Many times diet tweaking has been the solution to many's problems.
Try that and see if that help.Please keep us posted with your progress.