SciFi and Fantasy Book Club discussion

Hi everybody, new member to this group and I'm hoping someone may be able to help.

I read a book a few years ago and can't for the life of me remember the title or who wrote it. Bit of a long shot I know.

The book is concerned with a simulated reality. The lead is a college Professor who can't remember his past. There is an eccentric millionaire who starves himself to death, a mass suicide from the golden gate bridge and other strange phenomenon.

I think it starts and ends with scientists looking at the AI simulation experiments that they are running.

Apologies for the terrible description and poor memory.

Hope someone can help.
J.

If it weren't years ago, I would say it was Faller by Will McIntosh....P.S...I really recommend him.