Hi, in RUT955 with software versions at least from .16 to .19 the signal strength metrics is not continuos, but has holes (see picture).
This happens in RUT955 routers with RUT9_R_00.07.06.19 and latest modem firmware, only (as far as I’ve seen) for modem Meiglink SLM750-VE. But it happens even with the latest modem version installed.