Oh, that's fantastic to know.

Did you load it into multitrack, or the regular editor? (in multitrack it does not scale currently, but working on it). On regular editor it should in theory try to zoom.

There is a pyramid cache mechanism for long files, basically it tries to optimize with simple heuristics how many peak-lines to show for every zoom level. The renderer is pretty dumb right now - just old-school 2d canvas "ctx.lineTo" calls - no gpu, so enormous files can really make it slow, this is the reason for the drops (to ease load). So it might be dropping way too many samples in this case and then not switching properly to the next cache level because the zoom to duration/length ratio is enormous.

I 'll look into it. Thanks again