Another example: These are results of a more powerful system, posted on the beta-list by user "Wolfgang" about two years ago:
Primary System: I really have not been able to stress it
128 latency: roughly 50-55 instruments @ 65-70% cpu
512 latency: 80 @ roughly 65-70%
1024: over 100 instruments @ 75%
Like Dietz, I used Perf Legato patches for each instrument. Same line with adjusted ranges. Buffer @ 1. Bringing buffer up allowed me even more cpu room to work with.
Note: This was a stress-test , with all instruments playing at the same time! In real life, one can achieve better numbers than that due to the fact that MIR is able to switch off convolution threads that aren't used at the moment.
/Dietz - Vienna Symphonic Library