@Cthulu_007
Hello and thank you for your great feedback and support!
AirVPN Suite version 2.0 for Linux will implement traffic splitting on an application basis. The first alpha preview is due in a matter of weeks (the first addition is however WireGuard support and integration, so in the alpha 1 you might not see a full traffic splitting implementation yet). In the meantime, if you need a simplified approach, you can split traffic on an application basis through any means of virtualization. Please remember, as usual, that any traffic splitting poses risks of de-anonymization in specific circumstances. Splitting traffic, therefore, must be considered a sensitive action which should be performed only by those who perfectly understand what they are doing.
Kind regards