Try to reduce dl impact on slow computers (web)

lib/torrent.js

@@ -1138,7 +1138,17 @@ class Torrent extends EventEmitter {
     const ite = randomIterate(this.wires)
     let wire
     while ((wire = ite())) {
-      this._updateWire(wire)
+      this._updateWireWrapper(wire)
+    }
+  }
+
+  _updateWireWrapper (wire) {
+    const self = this
+
+    if (typeof window !== 'undefined' && typeof window.requestIdleCallback === 'function') {
+      window.requestIdleCallback(function () { self._updateWire(wire) })
+    } else {
+      self._updateWire(wire)
     }
   }