That is impressive reticulation. It looks like you have a uniform colony of bacteria growing on your film.

How was your wash? I can't think of how this is possible. I take my color film from the wash at 100 and put it into stabilizer at 68 and it's fine. I also frequently use bleach at room temp after attempting to cool the film (eg removing it from the tank and blowing on it.)

It's impressive, whatever it is. Try tempering everything perfectly and running another roll through. Even stabilizer.

The grain picture failed. Sorry. Ignore the attachment.