Reaper hangs when changing presets in Sylenth1

[azwhome]

Steps to reproduce:
- Open Sylenth1 and click on the "next preset" button
- There is a chance the plugin will keep changing presets indefinitely, and the plugin and application will no longer accept mouse or keyboard inputs.

Video demonstration: https://drive.google.com/file/d/1Hlz...ew?usp=sharing

Notes:
- The chance seems to increase on lower CPU power (I'm on a laptop and it happens almost every time on the battery power profile, which throttles CPU)
- Did not encounter the glitch when running the plugin as "separate" or "dedicated" process
- I noticed that, unlike many other VSTs, Sylenth normally continues cycling through presets if the mouse is held down, so the glitch acts as if the program thinks the mouse continues to be held down forever when it isn't. I also didn't encounter the glitch when changing presets using the Sylenth key shortcuts (just with the mouse).

Specs:
- Surface Pro 6 running Windows 10 home
- Reaper 6.31

Appreciate your help!

[andym]

absolutely no help this, but just chipping in to report the same thing. sylenth1 sometimes just goes mad and flicks between all the presets and locks up reaper.
I'm going to see if I can reproduce in Ableton lite (the only other daw I have ) and then report to lennard.