Can't write automation in Logic

Hi! I can't record plugin's automation in any mode properly - I'm trying to record it during playback and it freezes all the time when region starts. Between regions it records good. I attached link to my screen recording so you can check how it's look like.

It is not a system overload, you can see my processor on top, also there is my automation settings.

Also I've tried to delete .plist files like being said in the internet - and it didn't help me at all.

What I did wrong? What did I miss?

Any helps would be good, because I'm a newby

P.S. READ automation works good

It looks like the knob itself stays put in those positions even though you continue dragging it down?

Can you try to automate another parameter, such as channel strip volume, see if you can reproduce the same issue?

It looks like the knob itself stays put in those positions even though you continue dragging it down?

Yes, it starts to record automation but stops immediately when audio signal starts.

Automation works goon in all groups of instruments except pads.

I've checked - fader automation does work well. But all the others automations on pads not so good.

On pad tracks I use Alchemy VST, maybe there is some conflict with it?

Check if there's conflicting region automation on the regions ? (Click the blue "Track" button in the track header)

There is no automation layers on these tracks at all