How do I enable my acceleration?

I installed macOS Big Sur following the Dortania guide, and I could successfully install the OS. But some stuff looks weird, things like transparency or some visual effects look nerfed or simple, and I believe it is related to the hardware acceleration.

So, how can I enable it?

My specs: CPU: Intel Core i5-9400 (Coffee Lake) iGPU: UHD 630 Graphics RAM: 16GB @ 2666Mhz Motherboard: GIGABYTE H310M M.2 2.0

By the way, before this successful installation, I got many problems with the iGPU, like black screen. Mostly related to the DevicePlatform config, so please consider this if you're going to suggest something a little bit crazy.

Thanks in advance.