Fair point. Although, even with it set to 31 in both the ini and Rivatuner, I still get momentary pauses down to 29, as opposed to 28 with 30.
If you are going to set it to 31 or higher in the ini file, I'd suggest removing the cap from Rivatuner altogether, seeing as anything above a 30 frame cap is going to give you a variable frametime (33.3ms, 33.1ms, 33.5ms, etc.) at 30hz, as opposed to a 30 frame cap (33.3ms) at the same 30hz. In other words, I'd prefer a momentary drop to 28 during texture load-ins with a constant frametime of 33.3 in between the pauses, as opposed to momentary drops to 29.5-29.9 with the variable frametime a 31+ cap allows.
That said, you have a much more powerful system than I do (GTX 770 4GB, i7-4770k here), and I'm sure since you have more memory (8GB here), your system isn't going to touch the pagefile (4096 on my secondary drive, else the game crashes), thus the probability that there will be less/no stutter when loading in new assets, no matter what the frame cap.