diff --git a/src/main/services/library-sync/merge-with-remote-games.ts b/src/main/services/library-sync/merge-with-remote-games.ts
index e31310fc..8790318f 100644
--- a/src/main/services/library-sync/merge-with-remote-games.ts
+++ b/src/main/services/library-sync/merge-with-remote-games.ts
@@ -32,10 +32,12 @@ export const mergeWithRemoteGames = async () => {
           {
             objectID: game.objectId,
             shop: "steam",
+          },
+          {
+            remoteId: game.id,
             lastTimePlayed: updatedLastTimePlayed,
             playTimeInMilliseconds: updatedPlayTime,
-          },
-          { remoteId: game.id }
+          }
         );
       } else {
         const steamGame = await steamGamesWorker.run(Number(game.objectId), {
diff --git a/src/main/services/library-sync/update-game-playtime.ts b/src/main/services/library-sync/update-game-playtime.ts
index efedf47c..190d7e7d 100644
--- a/src/main/services/library-sync/update-game-playtime.ts
+++ b/src/main/services/library-sync/update-game-playtime.ts
@@ -3,11 +3,11 @@ import { HydraApi } from "../hydra-api";
 
 export const updateGamePlaytime = async (
   game: Game,
-  delta: number,
+  deltaInMillis: number,
   lastTimePlayed: Date
 ) => {
   return HydraApi.put(`/games/${game.remoteId}`, {
-    playTimeDeltaInSeconds: Math.trunc(delta),
+    playTimeDeltaInSeconds: Math.trunc(deltaInMillis / 1000),
     lastTimePlayed,
   });
 };
diff --git a/src/main/workers/index.ts b/src/main/workers/index.ts
index cbcedaff..b0f9721f 100644
--- a/src/main/workers/index.ts
+++ b/src/main/workers/index.ts
@@ -11,6 +11,7 @@ export const steamGamesWorker = new Piscina({
   workerData: {
     steamGamesPath: path.join(seedsPath, "steam-games.json"),
   },
+  maxThreads: 1,
 });
 
 export const downloadSourceWorker = new Piscina({