diff --git a/src/video_core/renderer_opengl/gl_shader_context.h b/src/video_core/renderer_opengl/gl_shader_context.h
index 207a75d42d..d12cd06fa7 100644
--- a/src/video_core/renderer_opengl/gl_shader_context.h
+++ b/src/video_core/renderer_opengl/gl_shader_context.h
@@ -16,9 +16,9 @@ struct ShaderPools {
         inst.ReleaseContents();
     }
 
-    Shader::ObjectPool<Shader::IR::Inst> inst;
-    Shader::ObjectPool<Shader::IR::Block> block;
-    Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block;
+    Shader::ObjectPool<Shader::IR::Inst> inst{8192};
+    Shader::ObjectPool<Shader::IR::Block> block{32};
+    Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block{32};
 };
 
 struct Context {
diff --git a/src/video_core/renderer_vulkan/vk_pipeline_cache.h b/src/video_core/renderer_vulkan/vk_pipeline_cache.h
index 15aa7e224d..e323ea0fd4 100644
--- a/src/video_core/renderer_vulkan/vk_pipeline_cache.h
+++ b/src/video_core/renderer_vulkan/vk_pipeline_cache.h
@@ -92,9 +92,9 @@ struct ShaderPools {
         inst.ReleaseContents();
     }
 
-    Shader::ObjectPool<Shader::IR::Inst> inst;
-    Shader::ObjectPool<Shader::IR::Block> block;
-    Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block;
+    Shader::ObjectPool<Shader::IR::Inst> inst{8192};
+    Shader::ObjectPool<Shader::IR::Block> block{32};
+    Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block{32};
 };
 
 class PipelineCache : public VideoCommon::ShaderCache {