Improve ANSCV

modules/ANSFR/ANSFaceRecognizer.cpp

@@ -91,9 +91,14 @@ namespace ANSCENTER {
 				}
 
 				if (!m_trtEngine) {
-					// Enable batch support
-					m_options.optBatchSize = 8;
-					m_options.maxBatchSize = 32;
+					// Enable batch support. maxBatchSize controls the TRT workspace
+					// allocation (~linear in batch); opt is the kernel-selection sweet
+					// spot. Max=4 was picked to fit 4 concurrent face crops per frame
+					// comfortably on 8 GB GPUs while freeing ~1.5 GB VRAM vs max=32
+					// — most scenes have ≤4 faces visible, so throughput cost is
+					// near-zero (amortized per-face latency drops too at lower batch).
+					m_options.optBatchSize = 4;
+					m_options.maxBatchSize = 4;
 
 					m_options.maxInputHeight = GPU_FACE_HEIGHT;
 					m_options.minInputHeight = GPU_FACE_HEIGHT;