I did some "experimenting" and re-loaded an older save file, where I managed to get the meters working again (by sleeping). I deleted the newer saves where the meter flat-out wasn't working (and couldn't be "jump-started" by sleeping or waiting) and tried to continue on with the functional save file. However, the meters again stopped working after a moderate time playing. I tried saving while the meters were working and re-loading this save if anything went wrong, and finally discovered that, without fail, the meters would stop working approximately 10-11 minutes (real-time) after loading the save.
Has anyone else encountered this glitch, or know what its cause is and/or how to fix it? I've also tried clearing my console's system cache and the game cache, restarting the console, reloading, turning hardcoe mode on and off via the settings menu (which does reset all hardcoe gauges to zero, but doesn't start them moving on their own again) and nothing has permanently fixed the problem. It isn't really a "game-breaking" bug, but it is annoying and takes away a primary aspect of playing in hardcoe mode.
Thanks in advance.