How do I reduce stutters and micro-pauses in Microsoft Flight Simulator 2020?

To reduce stutters and micro-pauses in Microsoft Flight Simulator 2020, we usually get the biggest improvement by lowering CPU-heavy settings first, capping frame rate, trimming traffic, clearing or rebuilding cache data, and testing with an empty Community folder. Most MSFS stutters come from main-thread load, streaming hiccups, or conflicting add-ons.

What causes stutters in MSFS 2020?

MSFS 2020 does not stutter for one single reason. The sim can hitch because the main thread is overloaded, because the GPU is running out of headroom, because online scenery streaming is inconsistent, or because an add-on is clashing with the current sim version.

The important part is this: high average FPS does not guarantee smooth flight. You can see 40-60 FPS and still get ugly micro-pauses if frame pacing is erratic, the CPU is spiking, or scenery data is arriving late.

How do we troubleshoot MSFS 2020 stutters properly?

1. Check whether you are CPU-limited or GPU-limited. Turn on the built-in FPS overlay in Developer Mode if you use it. If the overlay shows the main thread as the limit, lower CPU-heavy settings first. If the GPU is the limit, reduce render scaling, clouds and other graphics options instead.
2. Test with an empty Community folder. A surprising number of micro-pauses come from outdated scenery, liveries, avionics mods, traffic packages or utility tools. Remove everything temporarily, run a test flight, then add items back in small groups until the stutter returns.
3. Clear or disable the rolling cache. Corrupt or badly behaved cache data can cause periodic pauses. If the sim gets smoother with the rolling cache off, leave it off or rebuild it on a fast SSD rather than a slow drive.
4. Cap your frame rate. Chasing maximum FPS often makes frametimes worse. A steady cap that your system can hold consistently usually feels smoother than a higher number that swings around. If your monitor refresh and V-Sync settings are mismatched, try a simpler fixed target.
5. Lower the settings that hurt the CPU first. In MSFS 2020, Terrain LOD, Object LOD, AI or live traffic, ground aircraft, airport vehicles and glass cockpit refresh rate are frequent culprits. These are the first places we look for airport and approach stutters.
6. Then lower the settings that hurt the GPU. If the GPU is the bottleneck, reduce render scaling, cloud quality, shadow quality, reflections and ambient occlusion before cutting basic texture quality too aggressively.
7. Test online features one by one. Photogrammetry, live traffic, multiplayer and live weather all add load and data streaming. Switch them off for a short test. If stutters disappear, re-enable them individually so you can find the real trigger.
8. Check storage and background tasks. MSFS 2020 behaves far better on an SSD. Also close browser windows, overlays, recording tools, RGB utilities, hardware monitoring apps and any background scanner that may be hitting the drive or CPU while you fly.
9. Fly the same short test route each time. Use the same aircraft, airport, weather and camera pattern so each change means something. Random testing wastes time because one airport or one weather preset can behave very differently from another.

The best MSFS 2020 settings to change first

If we want the fastest route to smoother frametimes, we do not start by dropping every slider at once. We target the settings that cause the biggest spikes.

CPU-heavy settings that often reduce micro-pauses

• Terrain LOD - one of the biggest causes of main-thread stutters, especially near dense cities and on approach.
• Object LOD - helps with buildings and airport clutter draw distance.
• AI traffic and live traffic - traffic logic and aircraft rendering can hit both CPU and GPU, but the CPU side is often what creates hitches.
• Ground aircraft, airport vehicles and worker density - easy wins at complex airports.
• Glass cockpit refresh rate - lower refresh can smooth out heavy airliner cockpits noticeably.

GPU-heavy settings to lower if the graphics card is the limit

• Render scaling - usually the cleanest big reduction if GPU usage is pinned.
• Cloud quality - expensive, especially in bad weather.
• Shadow quality and shadow maps - can cause hitching as scenery complexity rises.
• Reflections and ambient occlusion - useful to trim when camera movement feels uneven.
• Texture-heavy options - helpful if panning causes stutters because VRAM is under pressure.

One common mistake is lowering only GPU settings when the real problem is the main thread. If your stutters happen mostly at big airports, in airliners, or over photogrammetry cities, CPU-side settings are usually where the gains are.

Should we use DX11 or DX12 in MSFS 2020?

If your MSFS 2020 installation gives you the choice, DX11 is usually the safer option for smoothness. DX12 can work well on some systems, but in MSFS 2020 it has often been less predictable for frametimes and can use more VRAM. If you are chasing micro-pauses rather than raw FPS, we would start with DX11 unless you already know your system prefers DX12.

Why does MSFS 2020 stutter near airports or on approach?

This is where the sim is busiest. You have detailed airport scenery, AI traffic, more object draw calls, cockpit displays updating, terrain streaming, and often weather effects all at once. That combination hits the main thread hard.

For approach and airport stutters, these changes usually matter most:

• Reduce Terrain LOD and Object LOD
• Lower traffic and ground aircraft
• Set glass cockpit refresh lower if you fly complex airliners
• Test with photogrammetry off in dense urban areas
• Remove heavy airport add-ons temporarily if the issue is limited to one location

If the sim is smooth in rural areas but rough at handcrafted airports, that points much more strongly to scenery complexity or add-ons than to a general hardware fault.

If micro-pauses happen every few seconds

A regular little hitch every few seconds often points to a repeating background task rather than simple low performance. The usual suspects are cache behaviour, traffic injection, cloud syncing, drive access, telemetry utilities, overlays, or an add-on repeatedly polling the sim.

We would try these in order:

1. Disable rolling cache and retest.
2. Turn off live traffic, multiplayer and photogrammetry for one flight.
3. Empty the Community folder.
4. Close overlays and monitoring tools.
5. Move the sim and cache to SSD storage if they are on a hard drive.

If the pause interval is very regular, an external utility or service is often involved. If the stutter is linked to camera movement, VRAM pressure is more likely.

Add-ons, storage and Windows checks that often get missed

MSFS 2020 is unusually sensitive to old add-ons after sim updates. A mod that seems unrelated to performance can still create stutters by throwing errors in the background or by forcing extra scenery or traffic work. If you use aircraft, scenery or utilities from our library at Fly Away Simulation downloads, keep them current and test them one at a time when troubleshooting.

Storage matters as well. We strongly prefer running the sim, its packages and any cache on a fast SSD. A mechanical hard drive can still load the sim, but it is far more likely to produce pauses when scenery data is being read or written.

Outside the sim, keep the system clean while flying:

• Close web browsers and launchers you do not need
• Disable unnecessary overlays, recording tools and hardware monitors
• Make sure large downloads and scans are not running
• Leave enough free disk space for Windows, the page file and the sim cache to behave normally

The short version: the changes most likely to help

If you want the quick shortlist, this is where we would start for MSFS 2020 stutters and micro-pauses:

• Use DX11 if DX12 is giving inconsistent frametimes
• Lower Terrain LOD and Object LOD
• Reduce traffic, ground aircraft and airport vehicles
• Lower glass cockpit refresh rate for complex aircraft
• Cap frame rate instead of letting FPS swing wildly
• Clear or disable rolling cache
• Test with an empty Community folder
• Keep the sim and cache on an SSD

That combination fixes the majority of MSFS 2020 stutter cases we see. If it does not, the next step is not random slider changes. It is a clean, repeatable test flight so you can separate a CPU limit, a GPU limit, a streaming problem and an add-on problem one by one.