Don't be Grinch Eoj

Those vids don't have the best tweaks, though a couple of them are ok-ish.
The game
can be tweaked to feel decently close, and certainly close enough to play the game
seriously as some like to put it

I played this game religiously for a few months, back then when it came out on 360 (not that i was anywhere close to decent at it though) and while perfectly playable and comparable to pcb, the port has some issues here and there, and in some ways the mame tweaks fix a few of them.
I'm slowly getting into the groove, but i have some good numbers for both Expert and Shot/Laser after testing it quite a lot this past week.
There's no slowdown that doesn't trigger as it should (levels, bosses) and even the spastic one (in-out, in-out), which is a great indicator of the correct Cpu clock, is there.
https://vimeo.com/655433052 (quick gameplay for Extra, potato quality sorry for that).
40 mhz/57% for Expert
41.8 mhz/56% for Shot
Will update the slowdown topic with better vids sometime in the future.