diff --git a/libavcodec/x86/dcadsp_init.c b/libavcodec/x86/dcadsp_init.c
index 9acb818c9425496b3a62b6e6d7c90caa14769ffe..7c2bec1f9b72582e5188534ea4b2525c2ff1e870 100644
--- a/libavcodec/x86/dcadsp_init.c
+++ b/libavcodec/x86/dcadsp_init.c
@@ -98,10 +98,10 @@ av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
     if (EXTERNAL_SSE2(cpu_flags)) {
         s->synth_filter_float = synth_filter_sse2;
     }
-    if (EXTERNAL_AVX(cpu_flags)) {
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
         s->synth_filter_float = synth_filter_avx;
     }
-    if (EXTERNAL_FMA3(cpu_flags)) {
+    if (EXTERNAL_FMA3(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_AVXSLOW)) {
         s->synth_filter_float = synth_filter_fma3;
     }
 #endif /* HAVE_YASM */
diff --git a/libavcodec/x86/dct_init.c b/libavcodec/x86/dct_init.c
index 7bda5e81b6547d8d3aa2b466da910832f7a2a413..ca9fbc7a686525bfd68862ad60df4706dad6a13d 100644
--- a/libavcodec/x86/dct_init.c
+++ b/libavcodec/x86/dct_init.c
@@ -34,6 +34,6 @@ av_cold void ff_dct_init_x86(DCTContext *s)
         s->dct32 = ff_dct32_float_sse;
     if (EXTERNAL_SSE2(cpu_flags))
         s->dct32 = ff_dct32_float_sse2;
-    if (EXTERNAL_AVX(cpu_flags))
+    if (EXTERNAL_AVX_FAST(cpu_flags))
         s->dct32 = ff_dct32_float_avx;
 }
diff --git a/libavcodec/x86/fft_init.c b/libavcodec/x86/fft_init.c
index 7ca72c54a446cb99b4514bb640035546ce5b16d1..5c0273de9d32f9585cbbc49a484f6a27574f93d9 100644
--- a/libavcodec/x86/fft_init.c
+++ b/libavcodec/x86/fft_init.c
@@ -48,7 +48,7 @@ av_cold void ff_fft_init_x86(FFTContext *s)
         s->fft_calc    = ff_fft_calc_sse;
         s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
     }
-    if (EXTERNAL_AVX(cpu_flags) && s->nbits >= 5) {
+    if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
         /* AVX for SB */
         s->imdct_half      = ff_imdct_half_avx;
         s->fft_calc        = ff_fft_calc_avx;
diff --git a/libavfilter/x86/af_volume_init.c b/libavfilter/x86/af_volume_init.c
index c59e0eda8eb70aeda24ae441df0ac1f7773c628b..26605fb2ce62718ee0c662144e1fb39d8e45fc41 100644
--- a/libavfilter/x86/af_volume_init.c
+++ b/libavfilter/x86/af_volume_init.c
@@ -52,7 +52,7 @@ av_cold void ff_volume_init_x86(VolumeContext *vol)
             vol->scale_samples = ff_scale_samples_s32_ssse3_atom;
             vol->samples_align = 4;
         }
-        if (EXTERNAL_AVX(cpu_flags)) {
+        if (EXTERNAL_AVX_FAST(cpu_flags)) {
             vol->scale_samples = ff_scale_samples_s32_avx;
             vol->samples_align = 8;
         }
diff --git a/libavresample/x86/audio_convert_init.c b/libavresample/x86/audio_convert_init.c
index d85ca8405fa42ee2d5239d3fea211c4464de3433..ae6c3191d14b0fda1e0583783d24bfdabe5800af 100644
--- a/libavresample/x86/audio_convert_init.c
+++ b/libavresample/x86/audio_convert_init.c
@@ -226,11 +226,13 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
                                   6, 16, 4, "SSE4", ff_conv_fltp_to_flt_6ch_sse4);
     }
-    if (EXTERNAL_AVX(cpu_flags)) {
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32,
                                   0, 32, 16, "AVX", ff_conv_s32_to_flt_avx);
         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT,
                                   0, 32, 32, "AVX", ff_conv_flt_to_s32_avx);
+    }
+    if (EXTERNAL_AVX(cpu_flags)) {
         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16P,
                                   2, 16, 16, "AVX", ff_conv_s16p_to_s16_2ch_avx);
         ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16P,
diff --git a/libavresample/x86/audio_mix_init.c b/libavresample/x86/audio_mix_init.c
index 7fc530ebc419a74f084f8ed0e89ff1a18fe16fa4..e14a54066dea0f37036ce431d93ec9c6670a59c5 100644
--- a/libavresample/x86/audio_mix_init.c
+++ b/libavresample/x86/audio_mix_init.c
@@ -195,11 +195,13 @@ av_cold void ff_audio_mix_init_x86(AudioMix *am)
         ff_audio_mix_set_func(am, AV_SAMPLE_FMT_S16P, AV_MIX_COEFF_TYPE_FLT,
                               1, 2, 16, 8, "SSE4", ff_mix_1_to_2_s16p_flt_sse4);
     }
-    if (EXTERNAL_AVX(cpu_flags)) {
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
         ff_audio_mix_set_func(am, AV_SAMPLE_FMT_FLTP, AV_MIX_COEFF_TYPE_FLT,
                               2, 1, 32, 16, "AVX", ff_mix_2_to_1_fltp_flt_avx);
         ff_audio_mix_set_func(am, AV_SAMPLE_FMT_FLTP, AV_MIX_COEFF_TYPE_FLT,
                               1, 2, 32, 8, "AVX", ff_mix_1_to_2_fltp_flt_avx);
+    }
+    if (EXTERNAL_AVX(cpu_flags)) {
         ff_audio_mix_set_func(am, AV_SAMPLE_FMT_S16P, AV_MIX_COEFF_TYPE_FLT,
                               1, 2, 16, 8, "AVX", ff_mix_1_to_2_s16p_flt_avx);
     }
diff --git a/libavresample/x86/dither_init.c b/libavresample/x86/dither_init.c
index 8349d5efc85acc31a5d92b0b0d11128d213e0baa..2a351c5f0dac773b033f1d8f1a878bfca892916d 100644
--- a/libavresample/x86/dither_init.c
+++ b/libavresample/x86/dither_init.c
@@ -46,14 +46,14 @@ av_cold void ff_dither_init_x86(DitherDSPContext *ddsp,
         if (EXTERNAL_SSE2(cpu_flags)) {
             ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_sse2;
         }
-        if (EXTERNAL_AVX(cpu_flags)) {
+        if (EXTERNAL_AVX_FAST(cpu_flags)) {
             ddsp->dither_int_to_float = ff_dither_int_to_float_rectangular_avx;
         }
     } else {
         if (EXTERNAL_SSE2(cpu_flags)) {
             ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_sse2;
         }
-        if (EXTERNAL_AVX(cpu_flags)) {
+        if (EXTERNAL_AVX_FAST(cpu_flags)) {
             ddsp->dither_int_to_float = ff_dither_int_to_float_triangular_avx;
         }
     }
diff --git a/libavutil/x86/float_dsp_init.c b/libavutil/x86/float_dsp_init.c
index a04d91c92323a9ff644b945be67950a28cdefb5c..b70433031a8ce668e92535abd20e643844c1b3d9 100644
--- a/libavutil/x86/float_dsp_init.c
+++ b/libavutil/x86/float_dsp_init.c
@@ -146,7 +146,7 @@ av_cold void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
     if (EXTERNAL_SSE2(cpu_flags)) {
         fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
     }
-    if (EXTERNAL_AVX(cpu_flags)) {
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
         fdsp->vector_fmul = ff_vector_fmul_avx;
         fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
         fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
diff --git a/libavutil/x86/lls_init.c b/libavutil/x86/lls_init.c
index 888bc54a3985e9497e3d99bf87ba34dc23634c5f..80cda2913914a726cd75427db8dc37a0fe9753a2 100644
--- a/libavutil/x86/lls_init.c
+++ b/libavutil/x86/lls_init.c
@@ -35,7 +35,7 @@ av_cold void ff_init_lls_x86(LLSModel *m)
         if (m->indep_count >= 4)
             m->evaluate_lls = ff_evaluate_lls_sse2;
     }
-    if (EXTERNAL_AVX(cpu_flags)) {
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
         m->update_lls = ff_update_lls_avx;
     }
 }