Game Frametime Analysis
Frametime and latency performance
The charts below show you graphics anomalies like stutters and glitches in a plotted chart: frame time and pacing measurements.
- FPS mostly measures performance, the number of frames rendered per passing second.
- Frametime AKA Frame Experience recordings mostly measure and expose anomalies - here, we look at how long it takes to render one frame. Measure that chronologically, and you can see anomalies like peaks and dips in a plotted chart, indicating something could be off.
We have a detailed article (read here) on the methodology behind it all. Basically, the time it takes to render one frame can be monitored and tagged with a number; this is latency. One frame can take, say, 17 ms. Higher latency can indicate a slow framerate, and weird latency spikes indicate a stutter, jitter, twitches; basically, anomalies that are visible on your monitor. These measurements show anomalies like small glitches and stutters that you can sometimes (and please do read that well, sometimes) see on screen. Below I'd like to run through a couple of titles with you. Bear in mind that Average FPS often matters more than frame time measurements.
Please understand that a lower frame time is a higher FPS, so for these charts, lower = better. Huge spikes would be stutters, thick lines would be bad frame pacing, and the graduate streamlining is framerate variation.
As you might have observed, we're experimenting a bit with our charts and methodology. Below the game at 2560x1440, with image quality settings as used throughout this review. For reasons of time, two plots from two cards in the same performance ranges. Tested at ultra quality settings:
Above the GeForce RTX 3070 at ultra Quality in 2560x1440, RTX Ultra and DLSS Quality. Immaculate behavior; we're not passing 40ms (a stutter) here, so that's all good plotting wise. But make no mistake, the game engine will stutter now and then, especially when you just loaded up and start a scene.
Above the same GeForce RTX 3070 at ultra Quality, now with RTX and DLSS disabled. Slightly faster, ergo the lower frame times.
Above, you can see the Radeon RX 6800, again a decent plot, really. We see slightly more pacing and one stutter at the 26-second mark. Overall, not perfect, but definitely okay.