Meta quest link 72->74 Unreal connection lag

My meta link offers update 72->74. I installed it.

Link is working, BUT when i press VR-Preview in UE (Wifi/Cable not important), my UE scene appears in glasses after ~15 seconds delay. For example on Meta quest link 72 it takes 2-3 sec.

I download MQL-installer, and click "repair" installation. After that MQL installs automatically v72 of MQL. And everything is ok (Delay 2-3 sec)

(Firmware of Quest 3 is v72, maybe this is the problem? Version mismatch.)