- *SMPPS are not hoppable at all.
- *SMPPS has zero maturity time
- *SMPPS has lower instability than PPS (which should be the most unstable)
"Maturity time" means the time until the reward is received. If an SMPPS pool has a very negative buffer, it will take a long time for miners to get the reward for current mining.
"Hoppable" means that some times are more attractive to mine than others (considering all metrics, not just expected reward). In an SMPPS pool it is more attractive to mine when the buffer is positive due to having no maturity time in this scenario.
"Instability" includes the severity of a collapse. If a PPS pool collapses nothing happens. If an SMPPS pool collapses miners can lose a lot of money.