Proxy changing the final render

Hi everyone!

So I've been having this issue. I'm working with a 4k vertical file and I'm making 1080x1920 videos, since my computer can't handle the 4k I use proxies to edit. 
Its a DTC video Ad so I keyframe movement a lot, I make zoom ins and etc. Also place some elements on the screen with the Transform effect. 

When I export it inside Premiere, nothing seems wrong, the Export is OK. When I send it to Media Encoder, though - which I really need to do since I do lots of iterations of the same video at once - It messes all the keyframing I made, the zoom ins are framed different, and the transform effect too. 

Ex.: One png zooming in from the center of the frame on premiere / on ME it comes from the top left corner to the center. 

I tried exporting with proxies turned ON on ME: NO GOOD. 
Tried turning off all proxies before exporting media/ without checking the box on the export menu: NO GOOD.
Tried turning off proxies on the export menu: NO GOOD

Only thing that worked is exporting inside premiere. 

Could you guys help me? I lose a lot of time exporting one by one. TYSM.

I'm on Windows 11 64-bit
13th Gen Intel Core i5 - 13450Hx 
8.0GB RAM
Nvidia GeForce RTX 3050 6GB Laptop GPU

Premiere Pro 2024 v24.6.4 (Bulid 3)