Warning to people who dont know what the hell or what is 0.3.0.5 or why this is being on itch.io well, theres a plenty of answers.
1. Why this is on itch.io? Well, BeamNG team doesnt care anymore about their oldest test versions, public betas and more.
2. This is not the latest BeamNG version, 0.39 just came out 29th july.
3. Its not bad! Well, this version was released a long time ago, you havent seen the latest versions yet.
4. The game is laggy because your pc is either a laptop from a big time ago, low end pc or... maybe you just have a slow pc.
5. Its not a virus, tested in virustotal and on a real hardware.