Performance drop after Android Q

[SacredWicked]

Hello.

I've recently installed android q for my galaxy a6. 

But I'm facing some performance drops, like when I'm typing something with keyaboard, device's output is lower than input. Thus it results in LAG or SPIKES in typing.

Any ideas?

Already tried restarting.

[Luqmanakim]

Have you tried Wiping the cache partition in recovery mode? 

[Silver127]

You can change your keyboard for test

[SacredWicked]

Thanks for replies guys.
have a look around second 9 of this:
https://drive.google.com/file/d/1-3FnwDnwWLvZ8kl9SZ2pym_IQnzxybSY/view?usp=drivesdk

(A record of screen while typing, i just slow motioned it.)
as you can see, around second 9, some words lag happen. I press but they won't enter!
Any helps would be appreciated :(
I've alreadt tried reseting app preferences and setting preferences.

[SacredWicked]

guys i realized its inly happening for persian and not any other languages such as english!
any helps?

[SacredWicked]

Update: I've fixed it.
disabling Auto-space feature in Samsung keyabord fixed lag issue for me.