Btw, is there some way to "fix" the broken stopwatch, since with this update it was "upgraded" from x2 nostalgia to x0 (and upgrades don't increase this). (Rockin' the useless stats, here)
In my understanding the nostalgia is calculated by (base_nostalgia-heirloom_drop_this_run) x multi, the change from x2 to x0 is nerfed for short runs heirloom farming but better for long runs farming.
Edited: Actually nostalgia is lower than not equipping stopwatch, and negative nostalgia isn't working at all.