Cant get 64 bit processing to work

When I go to a new song and choose 64 bit processing, it says you must restart the application for the processing precision to take effect. So I save the song, close it and reopen it and it is back on 32 bit. So then I closed the program, reopened it and the song is still back at 32 bit.

What am I doing wrong?

That’s odd.I have it enabled & just opened a few old projects done in 8.0 & it’s working as expected.

Still cannot get it to work