The Ultimate Guide to PC Gaming Optimization

Find the bottleneck before changing anything

Open an overlay showing GPU utilisation, CPU utilisation and frame time. The one built into your graphics driver is fine; MSI Afterburner or CapFrameX give more detail. Then play for five minutes and read it.

If GPU usage sits at 95 to 100 percent, the graphics card is the limit. Lowering resolution or graphics settings will help.

If GPU usage sits well below 90 percent while one CPU core is pinned, the processor is the limit. Lowering graphics settings will do almost nothing; lowering draw distance, crowd density, shadow distance and physics quality will.

If neither is busy and the game still stutters, you are limited by storage or by memory. That is the most commonly missed case and often the easiest to fix.

The settings that actually cost frames

Ranked roughly by cost against benefit across most modern engines.

• Ray tracing and path tracing. By far the most expensive thing in any modern game. Turning it off is frequently a 40 to 60 percent frame-rate gain.
• Shadow quality and shadow distance. Consistently expensive, and the difference between High and Ultra is usually invisible in motion.
• Volumetric effects, fog and clouds. Very expensive, very hard to notice while playing.
• Ambient occlusion. Moderate cost. Medium looks nearly identical to Ultra.
• Anti-aliasing. Modern temporal methods are cheap. Older supersampling methods are brutally expensive.
• Textures. Nearly free as long as they fit in video memory, and catastrophic the moment they do not. This is the one setting to raise rather than lower, until you run out of VRAM.

Upscaling is not cheating

DLSS, FSR and XeSS render the game at a lower resolution and reconstruct it. On Quality mode the result is frequently indistinguishable from native, and sometimes cleaner, because temporal reconstruction removes shimmer.

Frame generation is a different thing and worth understanding separately. It inserts synthesised frames, so the number goes up but input latency does not improve. It feels excellent above roughly sixty real frames per second and poor below it.

Outside the game

One-time changes that often matter more than any slider.

• Enable your memory's XMP or EXPO profile in BIOS. RAM ships running slower than its rating until you switch this on, and in CPU-limited games it is worth a genuine double-digit percentage.
• Install games on an SSD, ideally NVMe. Modern engines stream assets continuously, so a mechanical drive shows up as stutter rather than as a lower average frame rate.
• Update graphics drivers, but do not chase every release. Update when a game you play is named in the release notes.
• Set the Windows power plan to High performance or Balanced rather than Power saver, and turn off Game Bar background capture if you are not using it.
• Check your monitor is actually running at its rated refresh rate. A 144Hz panel plugged in and left at 60Hz is extremely common.
• Clean the dust. Thermal throttling looks exactly like a slow computer, and a laptop two years into its life is usually throttling.

Installing mods without breaking anything

Mods are the main reason PC gaming stays interesting a decade after release, and the main reason people end up reinstalling a ninety-gigabyte game at two in the morning. A small amount of discipline avoids nearly all of that.

• Back up your save files before the first mod. They are small, and they are the one thing you cannot download again.
• Use a mod manager that keeps mods separate from the game files — Vortex, Mod Organizer 2, or the game's own workshop. Manually copied files are effectively impossible to remove cleanly.
• Install one mod at a time and launch the game after each. Ten mods installed together give you no way to identify which one broke it.
• Read the requirements. Most broken mods are simply missing a script extender or a framework mod the description asked for.
• Match the game version. A game that updates itself will break mods built for the previous patch, which is why many modded players disable automatic updates.
• Download from the established community sites. Mods are executable content, so a mod from an unknown mirror deserves the same scrutiny as any other downloaded file.

A realistic target

Consistency beats peak numbers. A locked sixty frames per second feels dramatically better than an average of eighty-five that swings between fifty and a hundred and twenty, because what you actually perceive is the variation.

Cap your frame rate slightly below your monitor's refresh rate and turn on your variable-refresh technology, G-Sync or FreeSync. That single combination fixes more perceived performance problems than any settings change.