Video rendering and playback option greyed out on 25.2.0

That just goes to show the importance of a balanced-performance system – specifically, the balance between the CPU and the GPU. In your case, the GPU is much weaker than the CPU, which can – and does – result in corrupted hardware renders. You really should have had a much more powerful GPU than your current Quadro RTX 4000 (which is, sadly, only equivalent to a GeForce RTX 2060 non-SUPER in overall CUDA performance).

It also proves that your IT department sometimes skimps on the GPU for productivity – too much CPU and not enough GPU. That would be like equipping an AMD Ryzen 9 9950X3D CPU-equipped PC with only a GeForce GTX 1660 SUPER GPU in terms of the relative performance balance.