If you want to tweak the slow-mo effect, for normal and respawn modes separately, or turn it off completely for both, this can now be done in the options (page 4). By default, the slow-mo effect for respawning players and respawn modes is now 30% faster, but it can be of course adjusted to match the normal setting.
The confetti effect triggered by the fratricide (5 kills in a row) was also potentially a bit too demanding for some machines (on top of dying physics kicking in at the same moment) so the amount of those particles was adjusted down.
Full changelog: