Advice about plugins which do not call to parameterGestureChanged()

There exist some VST (like Synth1 64 bits) which do not call to AudioProcessorParameter::Listener::parameterGestureChanged()

I was thinking into using an AsyncUpdater+Timer inside each parameter’s parameterValueChanged() to emulate this concept of gestures on/off (off with the timer/asyncupdater/fifo). However having a hundred of Timers for each loaded VST seems too tiresome for me.

Do you have any suggestion?