Thank you Erel.
Oh my... Programming Android really gives me headaches... I'm using LeapdroidVM to debug, even if it's not maintained for years now, it felt good. Easy to install, extremely light weight, loads in seconds. I'm running it on a somewhat outdated PC. Works with B4A perfectly. Except it runs And4...
Turns out I have to search for another Emulator. I tried a lot, but most of them are extremely resource hungry, especially the android studio ones, or throw one exception after the other... I'm frustrated.
Excuse me, I've got to go into my corner and cry now.
Any suggestions for another light weight Emu?