[daneel_w]

The cause for your setup not being able to keep an accurate pace was likely something else. MIDI operates at only 31 kilobaud and even a lowly PC of the 90s had more than enough timing accuracy to handle that precisely and without delay. But certain software is just arguably worse than other.

[nonrandomstring]

Absolutely, the bane of PC (Mac slightly less so) sequencers of that era was kernel scheduling. With an OS like Windows you had layers of unpredictable buffer synchronisation. It wasn't until AV optimised RT kernels came of age after 2010 that PC sequencing offered satisfactory results - by which time almost all of the generative signal code is internal anyway (as plugins, VSTs etc).