anyone experienced fast heart rate that sometimes wont slow down on deca or tren ?

my last cycle i had to stop cause my heart wouldnt slow down, i was taking testE300 1ml and deca300 .5ml a week, i got tested from a specialist over a one month period and heart came back to normal, test came back as normal.

sometimes in the gym id be pushing heavy and my heart would pump so fast that at some points in training it felt like i was going to pass out.

any comments??