Today I noticed while testing 11.3 that both my rigs power consumption started out low (as configured), but crept higher later on.
The smaller 2 card rig was drawing 130W more than normal.  Core voltage showed 1.05V in HWinfo when I had config.txt set to 875.
The larger 6 card rig was also pulling 100W more than expected after some run time.

I hadn't seen the problem on v11. Now I upgraded to 11.4 - testing so far is good.
The power consumption problem took 8-12 hours to fully develop.  Monitoring still...

Positive note - I do see very small improvement in hashrate with 11.3 / 11.4 (rx580 4GB).