First of all, it should NOT be a one frame drop. It’s a tiny fraction of a second way less than one frame. But, yes, you can turn off the Quickfade Audio Events and it won’t drop on a split/cut. However, be careful in that you could end up with a small “pop” in those places. Not sure if that would still be an issue, though.
Under Options – Preferences – Editing tab, there’s a “Quickfade length for audio events (ms)” setting and it’s set to 10 by default so it will be 10 ms drop which is 1/100 of a second (not 1/30). So you can either turn the option off or you can change the number of milliseconds that it actually drops.