Why Is My PC Slow?
Quick diagnostics with likely causes and step-by-step fixes based on your inputs.
Open Task Manager with Ctrl+Shift+Esc, go to Performance and note high percentages.
Most likely causes
GPU-bound settings
Low · 25%How to fix it:
Lower the rendering resolution or switch to a lower quality preset.
Quick winTest: Task Manager → Performance → GPU. If GPU usage is at 99% while playing, you are GPU-limited.
Enable upscaling: DLSS (NVIDIA), FSR (AMD/all), or XeSS (Intel) to recover FPS.
Quick winCap your FPS to a stable value (e.g. 60 fps) to reduce frame-time spikes and stutter.
Quick winTest: Use RTSS or in-game frame limiter. Consistent 60 fps often feels smoother than unstable 80–100 fps.
Insufficient RAM
Low · 20%How to fix it:
Close heavy background apps and browser tabs before gaming.
Quick winTest: Open Task Manager, sort by Memory. Close any non-essential apps using more than 500 MB.
Disable unnecessary startup programs via Task Manager → Startup Apps.
Quick winTest: After disabling startup apps and restarting, check if RAM usage drops at idle.
Upgrade to 16 GB RAM if possible.
Hardware neededTest: Task Manager → Performance → Memory. If it shows 90%+ usage while idle, you need more RAM.
Storage bottleneck
Low · 17%How to fix it:
Keep at least 15–20% free disk space on your system drive.
Quick winTest: Check disk free space in File Explorer. Less than 10% free often causes slowdowns.
Check drive health with CrystalDiskInfo (SMART data) and replace failing drives.
Moderate effortTest: Download CrystalDiskInfo. A 'Caution' or 'Bad' status means the drive may be failing.
Move your OS and games to an SSD or NVMe drive.
Hardware neededTest: Open Task Manager (Ctrl+Shift+Esc) → Performance → Disk. If it shows 100% usage constantly, storage is the cause.
What to do next
Start with the Quick wins — they are free and take under 5 minutes. Only consider hardware purchases after exhausting the free fixes.
- — Confirming whether you have an HDD or SSD will significantly improve accuracy.
Disclaimer: this diagnosis is rule-based and intended as a starting point. Always verify with proper monitoring tools before making hardware changes.