I can confirm this as well but my solution was to change the keyboard. I have 3 of them a4tech, some china stuff I dont remember and HP, only on HP this bug dont occur that often which is great but sometimes does. I had this also before the 1.3 update. I think it has something with mouse and voice chat binding on my mouse. The mouse and keyboard on Arma is somehow emulated because it doesnt work without enabled controler. I blame Sony for that :D

In T188405#2749831, @Geez wrote:

Resolved for 1.3 release.
Regards,
Geez

In T187264#2749773, @komakloss wrote:

Is there any news about this issue? Two minor updates later it is still pretty much unplayable with this horrible screen tearing in performance mode on the PS5. Also the edge jittering / no Anti aliasing or whatever it causes is also really bad. And graphic mode (or however it's called) is unplayable due to very low FPS.

In T187490#2749568, @Geez wrote:

Resolved for 1.2.1.190 and higher.

I dont want to create another topic but I have similar problem on Ps5 with mouse and keyboard. My is little different but really anoying. When Im moving my character with WASD, quite often it moves in that direction on its own. This issue is a real problem when you want to just move a inch and character keeps moving, when I press radom WASD key it stops.