I am constantly looking at performance improvements as it is the most enjoyable part of programming to me. And looking at options to use less CPU while MiniMeters is idle is definitely something I can do more of. At the moment, 20%-25% on one core is acceptable to me. On my M1 Max, MiniMeters is almost always on an efficiency cores and 25% CPU on a Mac with 10 cores is 2.5% of the total CPU, but I expect more improvements there as time goes on.