Mate I use the same Hex as you do. Just took delivery of two more vials. So a bit bemused by what you are describing here.
I get great results from the stuff and have never had bloat, or the puffyness you mentioned. Good about the water by the way, with Tren the increase in body temp means you should increase how much you drink anyhow.
Maybe someone else has experienced what you are and will hop into the thread and enlighten us. Clearly it is not due to the Test, not at that dosage as I mentioned earlier.
So here is my Tren Hex 100mg protocol.
Two week cycle.
Tren Hex 100mg E3D
Test E 250mg E6D
EQ 250mg E6D
I alternate Test with EQ in the E3D pin with the Hex.
Strive for continuous improvement, instead of perfection.