I've ran 1g of test a week with 800mg/wk of deca, lost my drive but not function. Throw in some Cialis daily and I was good to go. I'd be more worried about rbc with this cycle.
the older i get and the longer i'm on aas nonstop i'm actually finding that lower doses are keeping me same size and strength but much leaner and more vascular since less water retention...so for me my sweetspot is same as others 500-600 depending on mg/ml...