Yeah, the only thing I really got from all this testing is that it's easy to visually identify large variances in frame times once you know what to look for. All those configurations struggled with frame times to one degree or another at the exact same time during the Tomb Raider benchmark, despite the frame rate staying high throughout.
You can easily spot the point where the frame times spiked near the beginning of each graph. The single card configuration just had one big spike, but the dual cards with and without frame pacing have several big spikes. That's right near the start of the benchmark as the camera is rotating around Lara and pointing at the mountains and brush behind her, before panning around to show the beach and ocean.
When watching the screen during the benchmark, the stuttering at that one point is quite obvious. Otherwise, it's not very visually apparent during the rest of the benchmark. At the very least, it's a good way to point out what microstutter looks like to anybody who has never seen or noticed it.
*Edit: This spot right here corresponds with the highest variance in frame times and is obvious while watching the benchmark: