I'm not worried, Redneck Rampage was always flaky and in hours since it hasn't so much as burbled - which means DOSBox-Staging is at least as stable as any actual DOS machine I ever ran.
Incidentally, I did a performance comparison of DOSBox-Staging between my three machines by running Quake in 320x200, and both my M2 Air and Ryzen 5700GE notch over 200 fps, while the Power9 wrangles about 35. I want to be clear that I'm not complaining: the Power9 is delivering performance that feels very much like a midrange Pentium, which means it's sufficient for anything that all but crazy people would ask of MS-DOS, but I am curious about the sheer amount of that difference.