Скачать или смотреть One Windows Setting Fixed My Sim Frametime Spikes (MSFS, DCS, X-Plane)

I recently noticed something interesting in my frametime graphs while flying in Microsoft Flight Simulator 2024. There were tiny, perfectly spaced spikes appearing every second or so. They weren’t obvious while flying, but they showed up clearly in the performance graph.

A viewer pointed it out in the comments — and after some testing, the cause turned out to be a single Windows graphics setting.

In this video I show the setting that removed those rhythmic frametime spikes and explain why it can affect multiple flight simulators, including:

• Microsoft Flight Simulator 2024
• DCS World
• X-Plane 12

The fix involves forcing your simulator to use the high-performance GPU in Windows 11 graphics settings and understanding how modern simulators interact with the Windows presentation pipeline.

Many modern PCs have multiple GPUs available to Windows (integrated graphics + dedicated GPU), and allowing the OS to decide which GPU to use can sometimes introduce small scheduling interruptions that show up as frametime spikes.

If you're chasing smooth frametimes and stable performance, this is a quick setting worth checking.

Steps shown in the video
Open Windows Settings → System → Display → Graphics
Find your simulator executable
Set it to High Performance GPU
Verify Optimizations for windowed games is enabled

Why this matters for flight simulators

Modern sims often run in borderless fullscreen mode, which means they rely heavily on the Windows graphics pipeline. Small scheduling interruptions that might be invisible in other games can show up clearly in frametime graphs when running CPU-heavy simulations.

00:00 Strange Frametime Spikes
01:10 The Windows Setting That Fixed It
02:25 Why Windows "Let it Decide" Can Cause Spikes
03:15 Why Flight Sims Reveal This Problem
03:45 Not Just MSFS - DCS & X-Plane Too
04:05 Borderless Mode & Windows Graphics Pipeline
04:20 Bonus Setting: Windowed Game Optimizations
04:35 Before vs After Frametime Graph


If this tweak improved your frametime stability, let me know in the comments what simulator and hardware you’re running.

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