0008582: A large lag in the response of the UI in some VST3 plugins

ID	Project	Category	View Status	Date Submitted	Last Update

0008582	ardour	bugs	public	2021-02-24 18:49	2023-04-19 10:22

Reporter	unius	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	new	Resolution	open
Platform	GNU	OS	Linux	OS Version	(any)
Product Version	6.5

Summary	0008582: A large lag in the response of the UI in some VST3 plugins
Description	Some VST3 plugins (apparently based on JUCE) plugins have a very large delay on any user actions. This does not appear on other hosts (for example, Reaper) and in the VST2 version of the same plugins in Ardour. A similar effect is observed in Harrison AVA plugins on any host starting with beta version from 2020.08.07 (in 2020.07.31 and earlier, everything was fine).
Steps To Reproduce	1 get https://tal-software.com/downloads/plugins/TAL-J-8_64_linux.zip 2 install VST2 and VST3 version 3 create a MIDI Track in Ardour with the VST3 version of this plugin 4 try clicking on any button that brings up a pop-up window/menu (for example SC) 5 after a few seconds, the window/menu may or may not appear 6 try with VST2 version 7 all ok
Additional Information	tested on Ardour Nightly Build 6.6.40 x86_64, Optimized, Demo, gcc5
Tags	No tags attached.

Date Modified	Username	Field	Change
2021-02-24 18:49	unius	New Issue