Prior to the Ryzen launch, we discovered an issue with GTA V testing that would cause high-speed CPUs of a particular variety to stutter when achieving high framerates. Our first video didn’t conclude with a root cause, but we now believe the game is running into engine constraints – present on other RAGE games – that trigger choppy behavior on those CPUs. Originally, we only saw this on the best i5s – older gen i5 CPUs were not affected, as they were not fast enough to exceed the framerate limiter in GTA V (~187FPS, or thereabouts), and so never encountered the stutters. The newest i5 CPUs, like the 7600K and 6600K, would post high framerates, but lose consistency in frametimes. As an end user, the solution would be (interestingly) to increase your graphics quality, resolution, or otherwise bring FPS to around the 120-165 mark.
Then Ryzen came out, and then Ryzen 5 came out. With R5, we encountered a few stutters in GTA V when SMT was enabled and when the CPU was operating under conditions permitting the CPU to achieve the same high framerates as Intel Core i5-7600K CPUs. To better illustrate, we can actually turn down graphics settings to a point of forcing framerates to the max on 4C/8T R5 CPUs, relinquishing some of the performance constraint, and then encounter hard stuttering. In short: A higher framerate overall would result in a much worse experience for the player, both on i5 and R5 CPUs. The 4C/8T R5 CPUs exhibited this same stutter performance (as i5 CPUs) most heavily when SMT was disabled, at which point we spit out a graph like this:
Mirror's Edge – the first game – had some of the most intensive graphics of its time. Just enabling PhysX alone was enough to bring most systems to their knees, particularly when choppers unloaded their miniguns into glass to create infinitesimal shards. The new game just came out, and aims to bring optimized, high-fidelity visuals to the series.
Our Mirror's Edge Catalyst graphics card benchmark tests FPS performance on the GTX 1080, 1070, 970, 960, AMD R9 Fury X, 390X, 380X, and more. We're trying to add more cards as we continue to circumvent the DRM activation restrictions – which we're mostly doing by purchasing the game on multiple accounts (update: we were able to get around the limitations with two codes, and it seems that the activation limitation expires after just 24 hours). The video card benchmark looks at performance scaling between High, Ultra, and “Hyper” settings, and runs the tests for 1080p (Ultra), 1440p (Ultra), and 4K (High), with a splash of 1080p/Hyper tests.
We've also looked briefly into VRAM consumption (further below) and have defined some of the core game graphics settings.