diff --git a/src/renderers/webgl/WebGLCapabilities.js b/src/renderers/webgl/WebGLCapabilities.js
index 93f5d2040a76f711b77c9fd46c17a19e884e1181..f8e487fc56aacff8bbb42918fbb73bb6cf0b49bc 100644
--- a/src/renderers/webgl/WebGLCapabilities.js
+++ b/src/renderers/webgl/WebGLCapabilities.js
@@ -57,7 +57,7 @@ function WebGLCapabilities( gl, extensions, parameters ) {
 		( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );
 	/* eslint-enable no-undef */
 
-	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
+	let precision = parameters.precision !== undefined ? parameters.precision : 'mediump';
 	const maxPrecision = getMaxPrecision( precision );
 
 	if ( maxPrecision !== precision ) {