Above, the percentile chart of the 30 seconds gaming @ 2560x1440. Here we plot FPS and place it in relation to percentiles.
50% of the time measured frames is doing 22 FPS.
The last 5% of the frames is at 20 FPS or lower. We see a strong drop off in the last 2% indicating stutters.
Please let me remind you of the fact that this is measured at a monitor resolution of 2560x1440, hence the low FPS for this mid-range product.
On this 30 second run the graphics card manages to remain below 40ms mostly, we see much more stuttering in the chart. This is relative though, at 2560x1440 this really is an unfair measurement for the R7790. The big spike at ~7 seconds is actually visible, the GPU clogs up and I can see some inserted frames there. That translates to a small visible freeze on screen.
With this chart, lower = better. Huge spikes above 40-50ms can be considered a problem like a stutter or indicate a low framerate.
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