diff --git a/src/client/graphics/webgpu/TerritoryRenderer.ts b/src/client/graphics/webgpu/TerritoryRenderer.ts
index 6d2dd608b..12861303c 100644
--- a/src/client/graphics/webgpu/TerritoryRenderer.ts
+++ b/src/client/graphics/webgpu/TerritoryRenderer.ts
@@ -316,9 +316,6 @@ export class TerritoryRenderer {
     // Upload palette if needed
     this.resources.uploadPalette();
 
-    // Upload terrain params if needed (theme changed)
-    this.resources.uploadTerrainParams();
-
     // Upload defense posts if needed (tracks if it was dirty before upload)
     const wasDefensePostsDirty = (this.resources as any)
       .needsDefensePostsUpload;
diff --git a/src/client/graphics/webgpu/compute/StateUpdatePass.ts b/src/client/graphics/webgpu/compute/StateUpdatePass.ts
index a61a04789..f2d6e47a4 100644
--- a/src/client/graphics/webgpu/compute/StateUpdatePass.ts
+++ b/src/client/graphics/webgpu/compute/StateUpdatePass.ts
@@ -101,7 +101,9 @@ export class StateUpdatePass implements ComputePass {
       const pass = encoder.beginComputePass();
       pass.setPipeline(this.pipeline);
       pass.setBindGroup(0, this.bindGroup);
-      pass.dispatchWorkgroups(numUpdates);
+      // Dispatch with workgroup_size(64), so divide by 64 and round up
+      const workgroupCount = Math.ceil(numUpdates / 64);
+      pass.dispatchWorkgroups(workgroupCount);
       pass.end();
     }
 
diff --git a/src/client/graphics/webgpu/shaders/compute/state-update.wgsl b/src/client/graphics/webgpu/shaders/compute/state-update.wgsl
index 9532b8af0..8fb0821a5 100644
--- a/src/client/graphics/webgpu/shaders/compute/state-update.wgsl
+++ b/src/client/graphics/webgpu/shaders/compute/state-update.wgsl
@@ -6,7 +6,7 @@ struct Update {
 @group(0) @binding(0) var<storage, read> updates: array<Update>;
 @group(0) @binding(1) var stateTex: texture_storage_2d<r32uint, write>;
 
-@compute @workgroup_size(1)
+@compute @workgroup_size(64)
 fn main(@builtin(global_invocation_id) globalId: vec3<u32>) {
   let idx = globalId.x;
   if (idx >= arrayLength(&updates)) {