diff --git a/Cargo.lock b/Cargo.lock
index 0f1e35f..8c54466 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -83,13 +83,68 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "715e8152b692bba2d374b53d4875445368fdf21a94751410af607a5ac677d1fc"
+dependencies = [
+ "cfg-if",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96bf8df95e795db1a4aca2957ad884a2df35413b24bbeb3114422f3cc21498e8"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "crossbeam-utils",
+ "memoffset 0.7.1",
+ "scopeguard",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "422f23e724af1240ec469ea1e834d87a4b59ce2efe2c6a96256b0c47e2fd86aa"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "either"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
+
 [[package]]
 name = "field-offset"
 version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e1c54951450cbd39f3dbcf1005ac413b49487dabf18a720ad2383eccfeffb92"
 dependencies = [
- "memoffset",
+ "memoffset 0.6.5",
  "rustc_version",
 ]
 
@@ -350,6 +405,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "libappindicator"
 version = "0.7.1"
@@ -408,6 +472,34 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5de893c32cde5f383baa4c04c5d6dbdd735cfd4a794b0debdb2bb1b421da5ff4"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "ntapi"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc51db7b362b205941f71232e56c625156eb9a929f8cf74a428fd5bc094a4afc"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "num_cpus"
+version = "1.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6058e64324c71e02bc2b150e4f3bc8286db6c83092132ffa3f6b1eab0f9def5"
+dependencies = [
+ "hermit-abi",
+ "libc",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.16.0"
@@ -446,6 +538,7 @@ dependencies = [
  "glib",
  "gtk",
  "libappindicator",
+ "sysinfo",
 ]
 
 [[package]]
@@ -529,6 +622,29 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rayon"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e060280438193c554f654141c9ea9417886713b7acd75974c85b18a69a88e0b"
+dependencies = [
+ "crossbeam-deque",
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cac410af5d00ab6884528b4ab69d1e8e146e8d471201800fa1b4524126de6ad3"
+dependencies = [
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-utils",
+ "num_cpus",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.3.3"
@@ -538,6 +654,12 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
 [[package]]
 name = "semver"
 version = "0.11.0"
@@ -588,6 +710,21 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "sysinfo"
+version = "0.26.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c375d5fd899e32847b8566e10598d6e9f1d9b55ec6de3cdf9e7da4bdc51371bc"
+dependencies = [
+ "cfg-if",
+ "core-foundation-sys",
+ "libc",
+ "ntapi",
+ "once_cell",
+ "rayon",
+ "winapi",
+]
+
 [[package]]
 name = "system-deps"
 version = "6.0.3"
diff --git a/Cargo.toml b/Cargo.toml
index cfe4fab..780e668 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,3 +9,4 @@ edition = "2021"
 libappindicator = "0.7"
 gtk = "0.15"
 glib = "0.15"
+sysinfo = "0.26"
diff --git a/src/main.rs b/src/main.rs
index 8ff4c40..5e71019 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,7 +7,25 @@ pub use err::*;
 use libappindicator::*;
 use gtk::prelude::*;
 use pack::*;
+use std::cell::RefCell;
 use std::time::{Duration, Instant};
+use sysinfo::*;
+
+thread_local! {
+    static SYSTEM: RefCell<System> = RefCell::new(System::new_all());
+}
+
+fn update_frame_time() -> Duration {
+    return SYSTEM.with(|system| {
+        let mut system = system.borrow_mut();
+        system.refresh_cpu_specifics(CpuRefreshKind::new().with_cpu_usage());
+        let num_cpus = system.cpus().len();
+        let load: f32 = system.cpus().iter()
+            .map(|cpu| cpu.cpu_usage() / num_cpus as f32)
+            .sum();
+        return Duration::from_millis(10 + 2 * load as u64); // min 10 (~100Hz), max 210 (~5Hz)
+    })
+}
 
 fn init_indicator(icon_pack: &IconPack) -> AppIndicator {
     let mut indicator = AppIndicator::new("parrotd", "");
@@ -32,9 +50,19 @@ fn main() {
 
     // Animation task
     let mut last_update = Instant::now();
-    glib::timeout_add_local(Duration::from_millis(1000 / 60) /* maximum 60Hz */, move || {
+    let mut last_update_frame_time = Instant::now();
+    let mut frame_time = update_frame_time();
+    glib::timeout_add_local(Duration::from_millis(1) /* we need granularity */, move || {
         let now = Instant::now();
-        if now - last_update >= Duration::from_millis(100) {
+
+        if now - last_update_frame_time >= Duration::from_millis(100) {
+            // Update frame time
+            frame_time = update_frame_time();
+            last_update_frame_time = now;
+        }
+
+        if now - last_update >= frame_time {
+            // Update animation
             indicator.set_icon(icon_pack.next_icon_path());
             last_update = now;
         }