Planet Zoo 2 Steam Deck Best Settings: Optimization Guide For 30 FPS

I’ll say it upfront: a zoo tycoon sim on a 7-inch screen shouldn’t work this well. Planet Zoo 2 does ship as Steam Deck Verified, and that matters. Controller layouts exist, the UI text is readable on the small display, and you aren’t squinting at menus designed for a 27-inch monitor.

But “Verified” is not “optimized for you.” It only means the game starts and behaves. Whether it still feels good three hours into a career park with hundreds of animals and thousands of guests is a different question. That’s what this column is about.

Everything below is based on the community findings and early testing I’ve pulled together, plus my own opinions about which compromises are worth making. Treat the numbers as a starting point. Every zoo is different, and yours will tell you when it’s struggling.

The Truth Nobody Wants to Hear: It’s the CPU

Most people tweak the wrong things. They crank textures down, panic about shadows, and wonder why the game still chugs in a big park.

Planet Zoo 2 is CPU-bound far more than GPU-bound. Every guest needs a path. Every animal is running its own AI, tracking hunger, mood, social needs, and habitat quality. Then the game layers foliage, finances, and physics on top. That’s a lot of simulation for a handheld APU.

On a fresh sandbox map, expect roughly 45 to 55 FPS on low-to-medium settings. That’s lovely, and it won’t last. Add multi-level aviaries, deep-water habitats, and a crowd, and the number slides. This isn’t a Deck problem so much as a Frontier-engine problem, and the same thing happened on desktop PCs with the first game.

So my philosophy is simple. Stop chasing frame rate and chase consistency. A flat, boring 30 FPS beats a number that bounces between 55 and 22 every time.

Step One: Cap the Frame Rate at the System Level

This is the most important change, and it doesn’t happen in the game’s menu. The in-game options don’t give you a proper frame limiter, so you have to use SteamOS.

Leave the game uncapped and the APU will burn everything it has chasing frames. The result is thermal throttling, stutter, and a battery that’s dead in roughly 80 to 90 minutes. I’ve seen people blame the game for that when the real culprit was no cap.

Here’s the fix:

Press the Quick Access button (the three dots on the right).
Open the Performance tab, the one with the battery icon.
Switch on Use per-game profile so the settings only affect this game.
Set the Frame Rate Limit to 30.
Match your refresh rate to your screen: 60Hz on the LCD, 90Hz on the OLED. Both divide cleanly into 30, which keeps frame pacing even.

Is 30 FPS a sacrifice? In a twitch shooter, absolutely. In a game where you’re laying paths and sculpting terrain, it’s completely fine. I’d rather have a cool, quiet Deck and 2.5 to 3 hours of battery than a hot one that gives up after ninety minutes.

My Recommended In-Game Settings

The game includes a Steam Deck preset, and it’s a decent place to start. But presets are cautious by design, and I think they leave visual quality on the table in some areas while spending performance in the wrong ones.

Here’s what I’d run:

Setting	My Pick	Why
Screen Mode	Fullscreen	No reason for anything else
Resolution	1280×800	The Deck’s native resolution
V-Sync	Off	SteamOS already handles pacing
Texture Quality	Medium	Low turns animal coats to mud, High risks stutter
Shadow Quality	Low (Medium for small zoos)	The biggest GPU cost for the least visible gain
Geometry Detail	Medium	Keeps buildings from popping in too harshly
Foliage Quality	Low	You’ll plant hundreds of trees, so this adds up fast
Water Quality	Medium	Matters for the new aquatic habitats
Effects Quality	Low	Cuts the cost of rain, mist, and particles
Volumetric Effects	Off	Barely visible on a small screen
Screen Space Reflections	Off	Helps stability around glass and water
Ambient Occlusion	Low	Keeps some depth without a big hit
Crowd Detail	Low	A huge win in busy parks

A few of these deserve explanation, because I’ll defend them.

Texture Quality at Medium is my favorite compromise. The Deck shares 16GB of memory between the CPU and GPU, so cranking textures isn’t free. Low makes animals look flat, and High can cause micro-stutters when you pan the camera quickly. Medium is the sweet spot.

Foliage at Low is the one people resist, because Planet Zoo is a gorgeous game and greenery is part of the charm. But welfare requirements push you to plant heavily, and dense plant life is one of the quickest ways to bog down a handheld. Take the hit here and keep the beauty elsewhere.

Volumetric Effects Off is the easiest call on the list. On a desktop monitor, volumetric fog looks spectacular. On a 7-inch screen held a foot from your face, you’ll hardly notice it’s gone, and you’ll reclaim real GPU headroom.

Upscaling: When FSR 3 Earns Its Place

By default the game uses Temporal Anti-Aliasing. At the Deck’s native 800p, TAA looks clean. Fences, fur, and thin railings stay crisp. The catch is that TAA does nothing to help performance.

When a large park starts dragging, that’s when I’d switch to AMD FSR 3. Here’s my approach:

Small or medium zoo: stay on TAA and enjoy the sharper image.
Big, crowded park: turn on FSR 3 at Balanced. It renders at a lower internal resolution and upscales to 800p, which frees up roughly 10 to 15 percent of GPU headroom. In practice that’s a 2 to 4 FPS cushion.
If it looks too soft: try Quality mode, or nudge the sharpness slider up a little.

I’ll be upfront about the downside. FSR can add some shimmer on wire mesh and animal enclosures. But a slightly shimmery 30 FPS beats a sharp 24, and in a management game you spend most of your time looking at the overall picture anyway.

Optional System Tweaks for the Tinkerers

If you like squeezing out a bit more, two adjustments are worth knowing about:

TDP limit of 11W to 12W. This is great for travel. It stops the APU from wasting power during quiet moments, and in early-to-mid-game zoos it should still hold a locked 30.
UMA Frame Buffer Size raised from 1GB to 4GB (BIOS). Plenty of Deck owners make this change for games that lean on shared memory. In a sim like this, it can reduce hitching when you open big management menus or jump across the map.

A reasonable warning: the BIOS change is only for people who are comfortable poking around in there. If that sounds like too much, skip it. The frame cap alone gets you most of the benefit.

Controls: Trackpads Are the Whole Game

If you’ve only ever played Planet Zoo with a mouse, the Deck controls take a little rewiring. But once it clicks, it clicks. Here’s my setup:

Right trackpad as a mouse. It’s accurate enough for path placement, terrain sculpting, and picking one animal out of a crowded habitat.
Radial menus on the left trackpad. Using Steam Input, I’d put the Zoopedia, finances, construction tabs, and heat maps on a radial menu. It saves you from tapping tiny icons at the bottom of the screen.
Back grips for time control. Mapping L4 and R4 to pause, play, and fast-forward is a small change that makes a big difference when you’re waiting on breeding programs or research.

Spend twenty minutes on this before you start a serious park. It pays you back immediately.

Keeping a Late-Game Zoo Alive

Here’s the part I think matters most, and it has nothing to do with settings. Even a perfect configuration can’t save a zoo that’s built carelessly. A few habits that help:

Set a guest cap. In the gameplay options, limit guests to around 1,500 to 2,000. Pathfinding is the CPU’s heaviest burden, and this keeps it from collapsing. The park still feels lively, and your frame pacing stays steady.
Be picky with workshop blueprints. Huge multi-thousand-piece creations look amazing but can hammer performance. Favor efficient builds.
Spread out the heavy stuff. Don’t cluster aquariums, dense aviaries, and elephant habitats in one corner. Put them in different sectors so the game isn’t loading every demanding asset at once.

I’d argue this is the real skill of playing Planet Zoo on a handheld. You stop thinking only like a builder and start thinking like a performance manager too.

Quick Reference

SteamOS Performance Menu

Per-game profile: On
Frame limit: 30 FPS
Refresh rate: 60Hz (LCD) or 90Hz (OLED)
TDP limit: Optional, 11W to 12W

In-Game

Fullscreen, 1280×800, V-Sync off
TAA for sharpness, or FSR 3 Balanced for big parks
Textures Medium, Shadows Low, Geometry Medium, Foliage Low
Water Medium, Effects Low, Volumetrics Off, SSR Off, AO Low, Crowd Low

Planet Zoo 2 Building Guide: How to Master the Dynamic Scaling Build System

Final Thoughts

I won’t pretend the Steam Deck is the ideal way to play Planet Zoo 2. A desktop will always win on raw power. But that was never the point. The point is that you can sit on a couch, a train, or a bed, build a sprawling wildlife sanctuary, and have it feel good.

The recipe is short. Cap the frame rate, lower the settings that cost the most and show the least, and manage your zoo’s complexity. Do those three things and the game stops fighting you.

If you’ve found a setting that works better than mine, I’d genuinely like to hear it. This kind of tuning is never finished, and the best tweaks usually come from other players.