I recognized, that the extended memory version of FL10 has some serious problems with its master clock.
Song is set to 127.
I add a 4 bar hihat loop, timed correctly
I add Vengeance Philta XL to the related fx track
Choosing "Mountain Climber" preset
Set (internal) lfo to 2/1
Put the audioclips in the playlist (no loop!)
Play (don't jump! Just leave it playing)
After around 1:30mins you hear, that the plugin lfo gets slightly but noticable async - it's around 0,1-1% faster than it should be => sounds crappy/incoherent.
If I open this project in "normal" FL10 version, this issue does not appear!
So it's a problem with the extended memory version, seriously!
This problem also doe NOT occur in 9.9 beta!
I also tried several things:
Bridged mode, this new processor setting, fixed buffer size,... everything you can set in wrapper! Does not work!
If you jump in the playlist, you won't hear the problem, because then the plugins get triggered/synced again.