For many years I have used a stand development technique I learned from an old press photographer. They called the method DD/FF (dilute developer/fast film)

They used TriX rated up to 3200 ASA and developed it in D76 diluted anywhere from 1 to 30 to 1 to 90 and upwards with a development time of 5 hours plus. I first tried it about 25 years ago and rated TriX at 20, 400, 800, 1600 and 3200 on the same roll and got good printable negatives from every film speed used. The grain was crisp and sharp as you would expect from TriX.