Revert "(PSX) CPU tweaks"

This reverts commit f1402d196c992b2fe08d536228d8e9c45536f15a.
Revert "(PSX) GPU tweaks"

This reverts commit 54bf41803fc1cdb7af2eb5ad7353299553dff74a.
Revert "(PSX GPU) Tweaks"

This reverts commit cb49967566b3229510f28ea899b776c0d0a1d182.