(Fixed aircraft here: https://www.simpleplanes.com/a/obTkaU/MiG-9-V1-5)
This aircraft is a bit unstable, thus pitches up violently when it reaches ~200km/h. The MiG-9 war a russian first generation fighter aircraft fitted with 2 BMW jet engines that had been captured during WWII and were designed for the me-262. This is a sub sonic jet fighter in real life and is hard to reach those speeds due to the pitching nature of the aircraft. I am open for people to edit and upload a fixed verion of this, and if it is good, looks the same and doesnt pitch up+ you contact me i will upload it as V2. Thx WWIIPlaneBuilder (and yes i know this wasn't a WWIIPlane)