diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index 3710db9d..6f6e6aa7 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -4255,9 +4255,11 @@ function sortfiles(nodes) {
 	if (!nodes.length)
 		return nodes;
 
-	var sopts = jread('fsort', jcp(dsort)),
+	var sopts = jread('fsort'),
 		dir1st = sread('dir1st') !== '0';
 
+	sopts = sopts && sopts.length ? sopts : jcp(dsort);
+
 	var collator = !clgot(ebi('nsort'), 'on') ? null :
 		new Intl.Collator([], {numeric: true});
 
diff --git a/copyparty/web/md.js b/copyparty/web/md.js
index d255b2c4..d8901a9a 100644
--- a/copyparty/web/md.js
+++ b/copyparty/web/md.js
@@ -17,8 +17,8 @@ var chromedbg = function () { console.log(arguments); }
 var dbg = function () { };
 
 // replace dbg with the real deal here or in the console:
-// dbg = chromedbg
-// dbg = console.log
+// dbg = chromedbg;
+// dbg = console.log;
 
 
 // dodge browser issues
diff --git a/copyparty/web/util.js b/copyparty/web/util.js
index 67d88b95..3be39d7f 100644
--- a/copyparty/web/util.js
+++ b/copyparty/web/util.js
@@ -578,7 +578,9 @@ function yscroll() {
 
 function showsort(tab) {
     var v, vn, v1, v2, th = tab.tHead,
-        sopts = jread('fsort', jcp(dsort));
+        sopts = jread('fsort');
+
+    sopts = sopts && sopts.length ? sopts : dsort;
 
     th && (th = th.rows[0]) && (th = th.cells);
 
@@ -979,11 +981,33 @@ function apop(arr, v) {
 }
 
 
-function jcp(obj) {
+function jcp1(obj) {
     return JSON.parse(JSON.stringify(obj));
 }
 
 
+function jcp2(src) {
+    if (Array.isArray(src)) {
+        var ret = [];
+        for (var a = 0; a < src.length; ++a) {
+            var sub = src[a];
+            ret.push((sub === null) ? sub : (sub instanceof Date) ? new Date(sub.valueOf()) : (typeof sub === 'object') ? jcp2(sub) : sub);
+        }
+    } else {
+        var ret = {};
+        for (var key in src) {
+            var sub = src[key];
+            ret[key] = sub === null ? sub : (sub instanceof Date) ? new Date(sub.valueOf()) : (typeof sub === 'object') ? jcp2(sub) : sub;
+        }
+    }
+    return ret;
+};
+
+
+// jcp1 50% faster on android-chrome, jcp2 7x everywhere else
+var jcp = MOBILE && CHROME ? jcp1 : jcp2;
+
+
 function sdrop(key) {
     try {
         STG.removeItem(key);