diff --git a/package.json b/package.json
index 2df8c1a637..602f20c092 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "jellyfin-noto": "https://github.com/jellyfin/jellyfin-noto",
     "jquery": "^3.4.1",
     "jstree": "^3.3.7",
-    "libass-wasm": "https://github.com/jellyfin/JavascriptSubtitlesOctopus",
+    "libass-wasm": "https://github.com/jellyfin/JavascriptSubtitlesOctopus#4.0.0-jf",
     "material-design-icons-iconfont": "^5.0.1",
     "native-promise-only": "^0.8.0-a",
     "page": "^1.11.5",
diff --git a/src/components/htmlvideoplayer/plugin.js b/src/components/htmlvideoplayer/plugin.js
index 995df6607b..97056f80ff 100644
--- a/src/components/htmlvideoplayer/plugin.js
+++ b/src/components/htmlvideoplayer/plugin.js
@@ -1058,7 +1058,19 @@ define(['browser', 'require', 'events', 'apphost', 'loading', 'dom', 'playbackMa
                 legacyWorkerUrl: appRouter.baseUrl() + "/libraries/subtitles-octopus-worker-legacy.js",
                 onError: function() {
                     htmlMediaHelper.onErrorInternal(self, 'mediadecodeerror');
-                }
+                },
+
+                // new octopus options; override all, even defaults
+                renderMode: 'blend',
+                dropAllAnimations: false,
+                libassMemoryLimit: 40,
+                libassGlyphLimit: 40,
+                targetFps: 24,
+                prescaleTradeoff: 0.8,
+                softHeightLimit: 1080,
+                hardHeightLimit: 2160,
+                resizeVariation: 0.2,
+                renderAhead: 90
             };
             require(['JavascriptSubtitlesOctopus'], function(SubtitlesOctopus) {
                 currentSubtitlesOctopus = new SubtitlesOctopus(options);
diff --git a/yarn.lock b/yarn.lock
index 5641ad41a5..d356ba6086 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6576,9 +6576,9 @@ levn@^0.3.0, levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
-"libass-wasm@https://github.com/jellyfin/JavascriptSubtitlesOctopus":
+"libass-wasm@https://github.com/jellyfin/JavascriptSubtitlesOctopus#4.0.0-jf":
   version "4.0.0"
-  resolved "https://github.com/jellyfin/JavascriptSubtitlesOctopus#1d12af0b04fb2337570b57d706dd97db2f904b9d"
+  resolved "https://github.com/jellyfin/JavascriptSubtitlesOctopus#7e6b75dcab9f7dad12719983510d05242803707c"
 
 liftoff@^3.1.0:
   version "3.1.0"