diff --git a/typescripts/comfyui/main_ui.tsx b/typescripts/comfyui/main_ui.tsx
index 25fed64..e8b2e39 100644
--- a/typescripts/comfyui/main_ui.tsx
+++ b/typescripts/comfyui/main_ui.tsx
@@ -14,6 +14,7 @@ import util from './util'
 import { store } from './util'
 
 import { base64UrlToBase64, copyJson } from '../util/ts/general'
+import { session_store } from '../stores'
 
 // Function to parse metadata from a title string
 function parseMetadata(title: string) {
@@ -265,6 +266,7 @@ async function addMissingSettings(plugin_settings: Record<string, any>) {
             ? random_seed.toString()
             : plugin_settings['seed'] // use the same as the main seed
 
+    session_store.data.last_seed = plugin_settings['seed']
     plugin_settings['hr_seed'] = plugin_settings['seed']
 
     return plugin_settings
diff --git a/utility/session.js b/utility/session.js
index e2652ae..38ea487 100644
--- a/utility/session.js
+++ b/utility/session.js
@@ -195,11 +195,14 @@ async function getSettings(session_data) {
 
         function calculateSeed(init_seed, batch_index, batch_size) {
             if (init_seed === -1) return -1
-            const seed = init_seed + batch_index * batch_size
+            // const seed = init_seed + batch_index * batch_size
+            const seed = init_seed + BigInt(batch_index) * BigInt(batch_size)
             return seed
         }
 
-        const init_seed = parseInt(sd_tab_store.data.seed)
+        // const init_seed = parseInt(sd_tab_store.data.seed)
+        const init_seed = BigInt(sd_tab_store.data.seed)
+
         const seed = calculateSeed(
             init_seed,
             g_current_batch_index,
@@ -425,7 +428,7 @@ async function getSettings(session_data) {
             denoising_strength: denoising_strength,
             batch_size: numberOfBatchSize,
             cfg_scale: cfg_scale,
-            seed: seed,
+            seed: seed.toString(),
             mask_blur: 4, //mask_blur, // don't use auto1111 blur, instead use Auto-Photoshop-SD blur
             use_sharp_mask: use_sharp_mask,
             use_prompt_shortcut: bUsePromptShortcut,