Amaloco AM-74 and shaking it around for 3-5min in water somewhere between 20-40C
AM-74 is a concept Hydroquinone, Phenidone developer were sharpness is over fine grain. It's a semi-compensating developer which has to be used around 20C too. A lot of films are going around 5:00 - 6:00 minutes in AM74 1+7. However by diluting more, the sharpness will also go up with a minimum of more grain.

AM-74 is in 1+9 - 1+15 on it's best. With a lot of films you can have good results with it.