Static glitch when game is once exported

I've been working on a short demo project based on a small forest with dynamic effects and I've finally managed to complete my entire map. I was thinking exporting my game to test it out and once it was finally done building my project, I been across a weird glitch witch makes my trees being into "static" witch was really ruining my project... I've tried to solve ways to solve this but I couldn't get to fix it, here's how it looks like:

If you guys have a good way to help with this, let me know your answers below! I will appreciate it :)

Thanks!