@gabrielesvelto Intel's officially stated reason is that (too) high voltage (and temperature) caused fast degradation of clock trees inside cores. This degradation resulted in a duty cycle shift (square wave no longer square?), which caused general instability. If they use both posedge and negedge as triggers, then change in duty cycle will definitely violate timing.
Intel Core 13th and 14th Gen Desktop Instability Root Cause Update
Following extensive investigation of the Intel® Core™ 13th and 14th Gen desktop processor Vmin Shift Instability issue, Intel can now confirm the
(community.intel.com)