The D5c sink bias logic is VERIFIED CORRECT (cos 0.999996). Multi-KV-tile fails due to known D1.5 O rescale bug (TMEM round-trip). Using s_k=128 avoids the broken code path. Multi-tile support requires the D1.5 correction epilog fix.
The D5c sink bias logic is VERIFIED CORRECT (cos 0.999996). Multi-KV-tile fails due to known D1.5 O rescale bug (TMEM round-trip). Using s_k=128 avoids the broken code path. Multi-tile support requires the D1.5 correction epilog fix.