Sailfish OS Emulator 4.0.1.48

Just installed the latest ea sdk. The emulator starts terribly slow - took several minutes yesterday (Fedora 34, Virtualbox 6.1.22 on AMD A10 APU). Now the emulator does not seem to start at all. Yesterday I got several errors about rcu_preempt to emulator console but it did start. Any advice?

Build engine works fine.