[NonBE] Merge of Contribution 23 HQ Envelope Stability Fix
Merge of Contribution 23 HQ Envelope Stability Fix Under #define ENV_STAB_FIX, affects bit exactness for switches to HQ core
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Merge of Contribution 23 HQ Envelope Stability Fix Under #define ENV_STAB_FIX, affects bit exactness for switches to HQ core