I have been using Vegas softwares(16, 18) for quite a while now, but now I ran into an issue trying to render a video. What I experience is that when I set the rendering preferences, the file name, and destination, and I click start render, it just stays at 0% forever. The estimated time left just decreases by time(it starts from -0:00:15). I've been trying to set the frame rate, the render engine, the bitrate, the preset, the frame size, but nothings solved the problem. I couldn't even change anything, whatever I do, it does the above thing.

My PC:
Motherboard: GYGABYTE B450M Gaming
Processor: AMD Ryzen 3 2200G
Graphincs: Processor integrated AMD Vega 8
Memory: 2x G.SKILL Aegis 8GB DDR4

Edit1: So after a day of testing, trying, and struggling, I found that only some parts of the project are unrenderable. this project contains videos taken by my phone, and with my action camera, but some parts of the phone-taken videos freeze the render, but this isn't the only problem. after I removed some of teh first parts, that I found toxic, the render went to 43%, and freezed again. I thought, that it was because of the tile that was there, but when I selected it, it started rendering like normal, but stopped again at 43% exactly. When it freezes, the current speed drops to 0.01 - 0.02 FPS, and well, it seems to work with that speed, but even if I render at 29.97fpr, the 10min long video will take forever to be done. I'll keep this post updated if I find out more.