Moon Sweepers Low FPS Fix: How to Stop Stuttering and Boost Performance

You boot up Moon Sweepers, the cozy 1-16 player co-op lunar cleaning sim from DragDrop Games. You’re vibing, sweeping dust, watching your conveyor belts hum, and your little army of robots (shoutout to J.O.O.N.A.S.) is doing its thing. Then your base grows a bit, three friends join the lobby, and suddenly your game turns into a slideshow with a side of freezes. Peak immersion, right?

I’ve seen the same story all over Steam discussions and Reddit threads: FPS drops, micro-stutters, random hitching, and the occasional full freeze. The good news is that most of it comes from a handful of known culprits, and nearly all of them can be fixed without buying new hardware.

In this guide I’ll walk you through everything that actually moves the needle, in the order I’d do it. Let’s get your 1% lows back from the grave.

First, Figure Out What Kind of Lag You Have

Before you touch a single setting, diagnose the problem. Moon Sweepers has two very different types of “lag,” and fixing the wrong one is just wasted time.

This guide is all about the first type: engine-level stutter and rendering lag. If your FPS counter is rock solid but actions feel delayed, that’s a different beast entirely.

Quick sanity check: turn on any FPS overlay (Steam’s built-in one works). If the number is low or jumping all over the place, keep reading. If it’s smooth but the game “feels” late, you’re dealing with the network side.

The Usual Suspects

Here’s what’s actually tanking your performance:

• Shader compilation under DirectX 12 (the big one, honestly)
• Volumetric lunar dust, which is gorgeous and absolutely brutal on your GPU
• Background auto-saves that briefly choke your drive
• Massive conveyor and logistics networks forcing the engine to track thousands of moving items

Now let’s squash them one by one.

Fix #1: Force DirectX 11 (Do This Right Now)

If you only do one thing from this entire article, make it this one.

By default, the 2026 release tries to run on DirectX 12. In theory, DX12 is the shiny modern option with better multi-threading. In practice, in Moon Sweepers it brings nasty shader compilation stutter and stability issues, especially on AMD Radeon cards and older rigs. It’s the kind of stutter where your game runs fine for ten seconds, then hitches like it forgot how to render.

The community consensus is clear: forcing DX11 is the single most effective fix. The devs have even acknowledged the problem and made DX11 a fallback for certain setups, but I’d still force it manually so you’re not leaving it to chance.

How to do it:

1. Open your Steam Library and find Moon Sweepers.
2. Right-click the game and hit Properties.
3. On the General tab, find the Launch Options box at the bottom.
4. Type exactly: -dx11
5. Close the window and launch the game.

That’s it. On both mid-tier and high-end GPUs, this smooths out frame times and basically deletes the stutter that used to hit during big dust sweeps. Honestly, it feels like a different game.

Pro tip: Want to go back to DX12 later to test future patches? Swap the launch option to -force-d3d12.

Fix #2: Rework Your In-Game Video Settings

Moon Sweepers has a few effects that look sweet but eat your GPU for breakfast. Here’s how I’d tweak them, with my honest take on each:

My personal take: Shadows are the first thing I’d sacrifice. On the Moon, with that harsh lighting, Medium shadows still look moody and atmospheric. You’d barely notice the difference, but your FPS counter definitely will. Dust, though? I’d keep that at Medium rather than Low. The dust is the game, and a clean-looking moon with no particles feels kind of soulless.

Fix #3: Tune Your GPU Drivers

Your graphics card driver can do a lot of heavy lifting, especially for asset streaming while you roam across the lunar surface.

For NVIDIA Players

• Open the NVIDIA Control Panel and go to Manage 3D Settings.
• Under Global or Program Settings (pick Moon Sweepers), set Low Latency Mode to Ultra. Heads up: this won’t raise your max FPS, but it cuts input latency and makes the game feel much more responsive.
• Check that Resizable BAR is enabled in your BIOS. On boards from roughly 2020 onward, it gives the GPU direct access to the full VRAM pool, which helps kill micro-stutters when assets stream in quickly.

For AMD Players

• Open AMD Software: Adrenalin Edition.
• Turn on Smart Access Memory (SAM) if your CPU and motherboard support it. It’s basically AMD’s version of Resizable BAR, and it’s practically free frames.
• Enable Radeon Anti-Lag for snappier controls.
• Disable Radeon Boost and Radeon Chill.

Why turn those two off? Boost drops your resolution during fast camera movement, which looks awful across those wide moon horizons (blurry, artifact-y, just ugly). Chill deliberately caps your frame rate, and it can trick you into thinking the game is badly optimized when it’s really your own driver holding things back. I’ve seen people chase “engine problems” for hours when Chill was the real villain.

Fix #4: Stop Your Own Base From Killing Your FPS

Here’s the part nobody warns you about: you are partly responsible for your own lag.

Early on, Moon Sweepers runs great. But once you’re deep into the late-game loop, with sprawling belts, splitters, mergers, and robots everywhere, the engine has to keep track of thousands of moving items at once. Every dust chunk rolling down a conveyor is a tiny tax on your CPU and GPU.

How to keep your base from becoming a performance black hole:

• Simplify your layouts. Avoid overcomplicated looping belts. Clean, efficient routing means fewer items moving on screen at any given time.
• Try performance-friendly mods. The community on Nexus Mods has put out stuff like the LogisticsPlus mod, which adds lag-free covered conveyors and optimized dust silos built from the garage assets. Covered belts mean far less to render than open, item-heavy vanilla ones.
• Space out your robot hubs. In earlier builds, swapping tools while dozens of player-built robots were working could cause a temporary freeze. Keep robot hubs organized and spread slightly away from your main upgrade stations so you don’t get a dense pile of entities in one spot.

Look, I get it. Building a gigantic, perfectly optimized logistics monster is half the fun. But if you’re getting 20 FPS watching your own masterpiece, something’s gotta give. A neat, compact base isn’t just prettier, it actually plays better.

Fix #5: Auto-Save Freezes and Co-op Lobby Chaos

With up to 16 players in a lobby, the host machine is carrying the whole squad on its back. If you’re hosting, you’ve probably noticed periodic frame drops when the game auto-saves.

What actually helps:

• Install the game on an NVMe SSD. When the game writes your base data to disk, you can get a hard freeze of up to half a second. A fast NVMe drive shortens that window dramatically, while an old mechanical HDD makes it way worse. If Moon Sweepers is sitting on a spinning hard drive, move it. Seriously.
• Clear your cache files. If performance gets worse the longer you play, back up your world progress first, then clear the temporary game caches in your local AppData folders. Corrupted data can cause persistent loop errors that drain your CPU.
• Keep the game updated. DragDrop Games is actively pushing performance patches. For example, version 1.0.4 targeted multiplayer upgrade tracking and Windows-specific background resource usage, which noticeably helped long-running co-op sessions.

My Quick-Start Checklist

Short on time? Here’s the order I’d follow:

1. Add -dx11 to your Steam launch options.
2. Drop Shadows to Medium/Low and Volumetric Dust to Medium.
3. Switch to Exclusive Fullscreen.
4. Enable Resizable BAR / SAM and sort out your driver settings (disable Radeon Boost and Chill).
5. Move the game to an NVMe SSD.
6. Clean up your conveyor spaghetti and consider LogisticsPlus.
7. Update the game and your GPU drivers.

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Final Thoughts

Moon Sweepers is one of those games that’s just good. The satisfying sweep, the automation rabbit hole, and chaotic co-op with friends make it easy to lose a whole evening. It’s a shame when stuttering gets in the way of that.

The big takeaway: DX11 first, shadows and dust second, then clean up your base and your storage. Do those three things and you’ll likely go from a stuttery mess to a smooth, locked frame rate, even in a packed lobby.

Keep your drivers updated, watch your temps, and go enjoy the most relaxing moon-cleaning experience around. See you in the lobby, and don’t forget to bring a broom. 🧹🌙

Moon Sweepers Fully Automated Factory Basic Build