I still experience a lot of glitches etc. so I continued to experiment. One major problem I have is random notes when using VSTi. This becomes most noticeable with drum-plugins since it completely throws the timing off. A few days ago I found out that disabling track-buffering for all tracks gets rid of this. Is there a way to completely disable it? What does it do anyway? Does it improve the performance in certain cases? And then: Today I was using the original Virsyn, which is a bit of a special case. It is multitimbral and open in a new independent window you can't close, as long as the plugin is loaded. If you act as if loading another instance the same instance is used, but automatically a new 'part' is assigned to that track. I wanted to use it for drums, so created three tracks track1: one for part1: bass-drum track2: a second one for part2: snare track3: a third one for the MIDI-item, which sends it's data to track1 and 2 (via MIDI-channel 1 and 2). Now here's the odd part: as soon as I loaded up a fourth track, terrible crackles started to occur. These crackles stopped as soon as I armed track 3, and reppeared as soon as I disarmed it. Further on, disabling anticipative FX processing also got rid of the crackles (however disabling track-buffers helped not). Isn't this really weird? Keep in mind, that this track neither contains/carry any audio-signal nor any FX - only the MIDI-signals are routed to track 1/2. How could this be explained? Does anyone have any idea? I mean: Virsyn is very old and a special case, like I mentioned, but still I assume my findings might illustrate some general problems with Reaper's engine.
Schwa, thank you very much for your explanation - that makes a lot of sense. I never was aware of it though, and I suspect many people with performance problems are not. The glitches I mentioned were during normal playback (without any opened editors). In the case of the random notes I described (which it seems were cured though by disabling track-buffering) it also affected the rendered mixes - prior to knowing about the track-buffering I had to render the tracks to get rid of it.
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This thread has been VERY helpful! I've been able to cut my latency on large MIDI projects in half. Can't wait for the auto buffer disable update!!!!!
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RE: performance yet again...
