PC Optimization Hub: a collection of various resources devoted to performance and input lag optimization
- Visual demonstration of 1 vs. 10 milliseconds
- "The average difference in aiming task completion (the time it takes to acquire and shoot a target) between a 12ms and 20ms PCs was measured to be 182ms - that is about 22 times the system latency difference."
- "In all studies, the trend shows continued improvements all the way toward zero latency."
- "We can confidently say that as little as 3 ms impacts gaming performance for above-average gamers."
- "240Hz is not enough. Not even close."
- "While participants performed dragging and scribbling tasks, very low levels of latency could be discriminated, i.e., ~1 versus 2 milliseconds while dragging".
- "In the first part, perceptual user experience under different jitter levels was examined using the ISO 4120:2004 triangle test protocol, and a jitter of over 0.3 ms could be perceived by sensitive subjects."
- "What Frame Rate is Needed to Simulate Reality?"
- "The human eye can see 39,620 Hz"
- Due to the sheer complexity of hardware and software and differences between various architectures, your mileage may vary. However, it is useful to be aware of things that can impact user experience and adjust them according to your needs.
- Create a personal document and keep track of everything you do. Adopt a systematic approach with proper testing methodologies, instead of just blindly changing many settings at once. Some settings are trade-offs between latency and frame time consistency / graphics quality. Some settings may not show a visible impact at first due to other bottlenecks.
- FrameView and PresentMon can measure both frame times and PC Latency. You can upload the CSVs here to visualize the frame time data, or here to visualize the PC Latency data. FrameView's PC Latency metric is only available in supported games.