I managed to upscale many textures and the game looks significantly better but the problem is after about ~200mb of textures the game gets laggy and the textures start glitching and flashing. It's not a VRAM issue since I'm only using 2gb and I have 8gb, if someone knows a way to fix this I was planning on writing a guide on my complete workflow using chainner, photoshop and python.
better comparison
https://imgsli.com/MTY1MTMz