diff --git a/libs/ardour/globals.cc b/libs/ardour/globals.cc
index 65d5e6ea76..452919c7de 100644
--- a/libs/ardour/globals.cc
+++ b/libs/ardour/globals.cc
@@ -207,6 +207,16 @@ setup_hardware_optimization (bool try_optimization)
 			mix_buffers_no_gain   = x86_avx512f_mix_buffers_no_gain;
 			copy_vector           = x86_avx512f_copy_vector;
 
+			if (g_getenv("ARDOUR_AVX_DEBUG")) {
+				int a = atoi (g_getenv("ARDOUR_AVX_DEBUG"));
+				if (a & 0x01) compute_peak          = default_compute_peak;
+				if (a & 0x02) find_peaks            = default_find_peaks;
+				if (a & 0x04) apply_gain_to_buffer  = default_apply_gain_to_buffer;
+				if (a & 0x08) mix_buffers_with_gain = default_mix_buffers_with_gain;
+				if (a & 0x10) mix_buffers_no_gain   = default_mix_buffers_no_gain;
+				if (a & 0x20) copy_vector           = default_copy_vector;
+			}
+
 			generic_mix_functions = false;
 
 		} else