diff --git a/src/hydro/Gadget2/hydro_iact.h b/src/hydro/Gadget2/hydro_iact.h
index b5356dc54b5cae03a0c491ddc57dde7b994561ed..b57994d24059596426be8f13db5318e619297d59 100644
--- a/src/hydro/Gadget2/hydro_iact.h
+++ b/src/hydro/Gadget2/hydro_iact.h
@@ -433,35 +433,6 @@ runner_iact_nonsym_1_vec_density(vector *r2, vector *dx, vector *dy, vector *dz,
   curlvrz.v = vec_mul(curlvrz.v, ri.v);
 
 /* Mask updates to intermediate vector sums for particle pi. */
-#ifdef HAVE_AVX512_F
-  rhoSum->v =
-      _mm512_mask_add_ps(rhoSum->v, knlMask, vec_mul(mj.v, wi.v), rhoSum->v);
-
-  rho_dhSum->v =
-      _mm512_mask_sub_ps(rho_dhSum->v, knlMask, rho_dhSum->v,
-                         vec_mul(mj.v, vec_fma(vec_set1(hydro_dimension), wi.v,
-                                               vec_mul(xi.v, wi_dx.v))));
-
-  wcountSum->v = _mm512_mask_add_ps(wcountSum->v, knlMask, wi.v, wcountSum->v);
-
-  wcount_dhSum->v = _mm512_mask_sub_ps(wcount_dhSum->v, knlMask,
-                                       wcount_dhSum->v, vec_mul(xi.v, wi_dx.v));
-
-  div_vSum->v = _mm512_mask_sub_ps(div_vSum->v, knlMask, div_vSum->v,
-                                   vec_mul(mj.v, vec_mul(dvdr.v, wi_dx.v)));
-
-  curlvxSum->v = _mm512_mask_add_ps(curlvxSum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvrx.v, wi_dx.v)),
-                                    curlvxSum->v);
-
-  curlvySum->v = _mm512_mask_add_ps(curlvySum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvry.v, wi_dx.v)),
-                                    curlvySum->v);
-
-  curlvzSum->v = _mm512_mask_add_ps(curlvzSum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvrz.v, wi_dx.v)),
-                                    curlvzSum->v);
-#else
   rhoSum->v = vec_mask_add(rhoSum->v, vec_mul(mj.v, wi.v), mask);
   rho_dhSum->v = vec_mask_sub(rho_dhSum->v, vec_mul(mj.v, vec_fma(vec_set1(hydro_dimension), wi.v,
                                                 vec_mul(xi.v, wi_dx.v))), mask);
@@ -471,7 +442,6 @@ runner_iact_nonsym_1_vec_density(vector *r2, vector *dx, vector *dy, vector *dz,
   curlvxSum->v = vec_mask_add(curlvxSum->v,vec_mul(mj.v, vec_mul(curlvrx.v, wi_dx.v)), mask);
   curlvySum->v = vec_mask_add(curlvySum->v,vec_mul(mj.v, vec_mul(curlvry.v, wi_dx.v)), mask);
   curlvzSum->v = vec_mask_add(curlvzSum->v,vec_mul(mj.v, vec_mul(curlvrz.v, wi_dx.v)), mask);
-#endif
 }
 
 /**
@@ -565,56 +535,6 @@ runner_iact_nonsym_2_vec_density(
   curlvrz2.v = vec_mul(curlvrz2.v, ri2.v);
 
 /* Mask updates to intermediate vector sums for particle pi. */
-#ifdef HAVE_AVX512_F
-  rhoSum->v =
-      _mm512_mask_add_ps(rhoSum->v, knlMask, vec_mul(mj.v, wi.v), rhoSum->v);
-  rhoSum->v =
-      _mm512_mask_add_ps(rhoSum->v, knlMask2, vec_mul(mj2.v, wi2.v), rhoSum->v);
-
-  rho_dhSum->v =
-      _mm512_mask_sub_ps(rho_dhSum->v, knlMask, rho_dhSum->v,
-                         vec_mul(mj.v, vec_fma(vec_set1(hydro_dimension), wi.v,
-                                               vec_mul(xi.v, wi_dx.v))));
-  rho_dhSum->v = _mm512_mask_sub_ps(
-      rho_dhSum->v, knlMask2, rho_dhSum->v,
-      vec_mul(mj2.v, vec_fma(vec_set1(hydro_dimension), wi2.v,
-                             vec_mul(xi2.v, wi_dx2.v))));
-
-  wcountSum->v = _mm512_mask_add_ps(wcountSum->v, knlMask, wi.v, wcountSum->v);
-  wcountSum->v =
-      _mm512_mask_add_ps(wcountSum->v, knlMask2, wi2.v, wcountSum->v);
-
-  wcount_dhSum->v = _mm512_mask_sub_ps(wcount_dhSum->v, knlMask,
-                                       wcount_dhSum->v, vec_mul(xi.v, wi_dx.v));
-  wcount_dhSum->v = _mm512_mask_sub_ps(
-      wcount_dhSum->v, knlMask2, wcount_dhSum->v, vec_mul(xi2.v, wi_dx2.v));
-
-  div_vSum->v = _mm512_mask_sub_ps(div_vSum->v, knlMask, div_vSum->v,
-                                   vec_mul(mj.v, vec_mul(dvdr.v, wi_dx.v)));
-  div_vSum->v = _mm512_mask_sub_ps(div_vSum->v, knlMask2, div_vSum->v,
-                                   vec_mul(mj2.v, vec_mul(dvdr2.v, wi_dx2.v)));
-
-  curlvxSum->v = _mm512_mask_add_ps(curlvxSum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvrx.v, wi_dx.v)),
-                                    curlvxSum->v);
-  curlvxSum->v = _mm512_mask_add_ps(
-      curlvxSum->v, knlMask2, vec_mul(mj2.v, vec_mul(curlvrx2.v, wi_dx2.v)),
-      curlvxSum->v);
-
-  curlvySum->v = _mm512_mask_add_ps(curlvySum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvry.v, wi_dx.v)),
-                                    curlvySum->v);
-  curlvySum->v = _mm512_mask_add_ps(
-      curlvySum->v, knlMask2, vec_mul(mj2.v, vec_mul(curlvry2.v, wi_dx2.v)),
-      curlvySum->v);
-
-  curlvzSum->v = _mm512_mask_add_ps(curlvzSum->v, knlMask,
-                                    vec_mul(mj.v, vec_mul(curlvrz.v, wi_dx.v)),
-                                    curlvzSum->v);
-  curlvzSum->v = _mm512_mask_add_ps(
-      curlvzSum->v, knlMask2, vec_mul(mj2.v, vec_mul(curlvrz2.v, wi_dx2.v)),
-      curlvzSum->v);
-#else
   /* Mask only when needed. */
   if(mask_cond) {
     rhoSum->v = vec_mask_add(rhoSum->v, vec_mul(mj.v, wi.v), mask);
@@ -656,7 +576,6 @@ runner_iact_nonsym_2_vec_density(
     curlvzSum->v += vec_mul(mj.v, vec_mul(curlvrz.v, wi_dx.v));
     curlvzSum->v += vec_mul(mj2.v, vec_mul(curlvrz2.v, wi_dx2.v));
   }
-#endif
 }
 #endif