diff --git a/src/k3particles.c b/src/k3particles.c
index f653fae..7b91732 100644
--- a/src/k3particles.c
+++ b/src/k3particles.c
@@ -76,6 +76,7 @@ static void regenerate_model(struct k3CPUQuadParticles *this, vec3 cameraRight,
 	glm_vec3_scale(cameraRight, 0.5, halfRight);
 	glm_vec3_scale(cameraUp, 0.5, halfUp);
 	
+	#pragma omp parallel for
 	for(size_t i = 0; i < this->count; i++) {
 		glm_vec3_copy(this->positions[i], vpos[i * 4 + 0]);
 		glm_vec3_copy(this->positions[i], vpos[i * 4 + 1]);
@@ -116,8 +117,11 @@ static void regenerate_model(struct k3CPUQuadParticles *this, vec3 cameraRight,
 		}
 	}
 	
+	// This update the AABB
+	k3MdlUpdatePos(this->mdl, vpos);
+	
 	glBindBufferARB(GL_ARRAY_BUFFER_ARB, this->mdl->vstore->gl);
-	glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, this->mdl->offV, sizeof(*vpos) * this->capacity * 4, vpos);
+	//glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, this->mdl->offV, sizeof(*vpos) * this->capacity * 4, vpos);
 	glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, this->mdl->offC, sizeof(*vcols) * this->capacity * 4 * 4, vcols);
 	glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, this->mdl->offU, sizeof(*vuvs) * this->capacity * 4, vuvs);
 	glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, this->mdl->offN, sizeof(*vnrms) * this->capacity * 4 * 3, vnrms);