Every speed-up list on the internet says "turn off animations" as if it were a turbo switch. The truth is smaller and more specific: visual effects cost real resources on old integrated graphics and almost nothing on a modern PC. This page grades the claim honestly so you know whether it is worth your time.
Windows 11's frosted transparency, window animations and shadows are rendered by the GPU. On a recent machine that GPU is idle most of the time, so the effects are nearly free. On a ten-year-old laptop whose integrated graphics struggle to draw the desktop itself, they are a genuine tax on every window you open. The same tweak is pointless on one PC and worthwhile on another — here is how to tell which yours is.
On a modern PC with a healthy GPU, disabling animations gains you nothing measurable — benchmarks do not move, apps do not open faster. What changes is feel: windows appear instantly instead of gliding, which some people experience as speed. On old integrated graphics, the gain is real but modest — smoother window handling and scrolling, not a transformed machine. Anyone promising more than that is selling the tweak, not measuring it.
Windows 11 puts the useful controls in Settings → Accessibility → Visual effects: Animation effects and Transparency effects. Turning both off is the whole modern version of this tweak — two switches, reversible in seconds, no registry involved. Transparency is the heavier of the two on weak GPUs, because every blurred panel must be rendered continuously.
The old sysdm.cpl → Advanced → Performance Settings dialog still exists and lists every effect individually. If you use it, be selective: untick animations, fades and shadows, but keep "Smooth edges of screen fonts" — disabling it makes all text look jagged for zero gain. "Adjust for best performance" unticks everything including that one, which is why the one-click route leaves PCs looking worse than they perform.
If Task Manager shows the disk at 100% or memory near full — the readings from the core guide in this series — visual effects are decoration on the real problem. Turning them off there gains nothing you can feel. Effects tuning is the last step of a speed-up, done after the bottleneck is fixed, on a machine whose GPU is genuinely weak. Done first, it just convinces you tweaks do not work.
Try it as an experiment, not a belief: turn both Settings switches off, use the PC for a full day of normal work, then decide. If window handling feels snappier and nothing looks broken, keep it. If you cannot tell the difference, turn them back on — a desktop you enjoy looking at is worth more than a placebo. That one-day test is worth more than any list, including this one.
The video tests the effects honestly — what changes on an old laptop, what changes on a modern PC, and why the order of fixes matters more than this tweak.
▶️ Watch Full VideoOnly on weak or very old integrated graphics, where rendering blurred panels is real work for the GPU. On a modern PC the effect is unmeasurable. It is a fair tweak for an old laptop and a cosmetic preference everywhere else.
No. These settings govern the Windows shell — window animations, menus, taskbar effects. Games and apps render themselves and are unaffected. Your frame rate will not change; only the desktop's behaviour will.
Because perceived speed is partly waiting for animation to finish. A window that appears instantly feels faster than one that glides in over 200 milliseconds, even though the app loaded in the same time. That feel is a legitimate reason to keep the setting — just know it for what it is.