Automation problem in daw (get stuck when hit play)

[theovintagesynth]

Hello everybody, I have trouble with my automatable parameters once my project is compiled as a vst. Automatable parameters are recognised by the daw, but it will not follow the automation in playback, only if I move manually the cursor, it’s like parameters are stuck when I hit play. I have some panels repainted by timer (LEDs panel and tempo info panel, which will show the tempo division and disappears 2sec after if a sync switch is turned on, and if I move the concerned speed knob. Parameters either have callback directly to the DSP (synth.setAttribute()…) or are labelled with processorID/parameterID (one or the other, never both for a single parameter). The weird thing is that happens with every parameter, no matter if they are labelled or have callback function. Is anyone already had this kind of problem ?