Longest a superseding view may keep aborting in-flight passes without one
committing (B5): past it, the pass in flight — whose streaming policy stops
at the first cold rung, so it is the coarsest data for its slice — commits
before the newer view runs. Settled frames are unaffected (the last view
always runs to completion); only how often a drag shows an intermediate
slice changes.
Longest a superseding view may keep aborting in-flight passes without one committing (B5): past it, the pass in flight — whose streaming policy stops at the first cold rung, so it is the coarsest data for its slice — commits before the newer view runs. Settled frames are unaffected (the last view always runs to completion); only how often a drag shows an intermediate slice changes.