Open VSTi GUI adds latency and messes up timing [SOLVED in 6.25]

[beingmf]

EDIT: Works again in 6.25!

I̵ ̵j̵u̵s̵t̵ ̵r̵e̵a̵l̵i̵z̵e̵d̵ ̵t̵h̵i̵s̵ ̵w̵h̵e̵n̵ ̵I̵ ̵M̵i̵d̵i̵-̵r̵e̵c̵o̵r̵d̵e̵d̵ ̵s̵o̵m̵e̵ ̵s̵y̵n̵t̵h̵e̵t̵i̵c̵ ̵d̵r̵u̵m̵s̵ ̵o̵n̵ ̵t̵o̵p̵ ̵o̵f̵ ̵a̵n̵ ̵e̵x̵i̵s̵t̵i̵n̵g̵ ̵d̵r̵u̵m̵ ̵l̵o̵o̵p̵:̵

̵A̵s̵ ̵s̵o̵o̵n̵ ̵a̵s̵ ̵I̵ ̵o̵p̵e̵n̵ ̵t̵h̵e̵ ̵V̵S̵T̵i̵ ̵(̵a̵n̵d̵ ̵i̵t̵ ̵d̵o̵e̵s̵n̵'̵t̵ ̵m̵a̵t̵t̵e̵r̵ ̵i̵f̵ ̵V̵S̵T̵2̵ ̵o̵r̵ ̵3̵ ̵o̵r̵ ̵b̵r̵i̵d̵g̵e̵d̵)̵,̵ ̵t̵h̵e̵ ̵M̵i̵d̵i̵ ̵d̵r̵u̵m̵s̵ ̵a̵r̵e̵ ̵p̵e̵r̵c̵e̵i̵v̵a̵b̵l̵y̵ ̵l̵a̵t̵e̵ ̵a̵n̵d̵ ̵o̵f̵t̵e̵n̵ ̵s̵o̵u̵n̵d̵ ̵l̵i̵k̵e̵ ̵d̵o̵u̵b̵l̵e̵-̵t̵r̵i̵g̵g̵e̵r̵e̵d̵ ̵a̵n̵d̵ ̵j̵u̵s̵t̵ ̵n̵o̵t̵ ̵a̵s̵ ̵t̵i̵g̵h̵t̵ ̵a̵n̵y̵ ̵l̵o̵n̵g̵e̵r̵.̵ ̵W̵h̵e̵n̵ ̵I̵ ̵c̵l̵o̵s̵e̵ ̵t̵h̵e̵ ̵G̵U̵I̵,̵ ̵t̵h̵e̵ ̵i̵s̵s̵u̵e̵ ̵i̵s̵ ̵g̵o̵n̵e̵.̵




̵(̵s̵a̵m̵e̵ ̵M̵i̵d̵i̵ ̵i̵t̵e̵m̵.̵ ̵R̵e̵n̵d̵e̵r̵ ̵1̵ ̵i̵s̵ ̵w̵i̵t̵h̵ ̵n̵o̵ ̵o̵p̵e̵n̵ ̵p̵l̵u̵g̵i̵n̵ ̵w̵i̵n̵d̵o̵w̵,̵ ̵r̵e̵n̵d̵e̵r̵ ̵2̵ ̵i̵s̵ ̵w̵i̵t̵h̵ ̵t̵h̵e̵ ̵U̵I̵ ̵o̵p̵e̵n̵)̵

̵B̵e̵f̵o̵r̵e̵ ̵y̵o̵u̵ ̵a̵s̵k̵:̵ ̵r̵e̵c̵o̵r̵d̵-̵a̵r̵m̵ ̵i̵s̵ ̵o̵f̵f̵.̵ ̵N̵o̵ ̵o̵p̵e̵n̵ ̵M̵i̵d̵i̵ ̵e̵d̵i̵t̵o̵r̵.̵

̵C̵a̵n̵ ̵y̵o̵u̵ ̵c̵o̵n̵f̵i̵r̵m̵?̵

[Csabb]

Hi,

is it possible that the difference is caused by round-robin using different samples for the same MIDI phrase in the two takes? They are lined up pretty well btw, this shouldn't cause audible latency.

Also - which VSTi is this?

[beingmf]

Thanks! This is a synthesized instrument, no samples, thus no Round Robin. It doesn't matter which particular instrument this was rendered with - it happens with any VSTi.

The "delay" of the second trigger is around 1800 samples btw, just to put things in perspective.