Nvidia GPU doesn't work on any distribution

My laptop had always had some issues related to the NVidia dGPU the NVidia RTX A500. Basically, I tried plenty different distributions, they all had either artefacts, or freezes, or both. Except for Fedora 40, which is now old. So I searched around a bit and realised that it is supposed to be supported by Ubuntu: * My Laptop - Lenovo ThinkPad P16v Gen 1 (AMD Ryzen 7 PRO 7840HS, NVIDIA RTX A500) So I installed Ubuntu LTS 24.04 and the nvidia drivers it proposed, but I still have artefacts. Note that the glitches appear a lot after booting, then after 5 min they calm down a bit. In the link, it is written that it is some kind of special ISO. 1. Is there a way I could acquire it, and does it make a big difference? 2. Also, does anyone know how I could solve this issue?