Just wondering what would be the best option for shmup emulation in 2021 , I'm only really interested in emulation shmups upto PGM stuff and will be running at 640x480 and then through my UVC into my Astro , all later stuff I'll use steam.
Easier set up the better , would rather play than mess around for days with settings

Hopefully these specs will be ok
Q9550
4gb DDR2 ram
HD 4550
Windows 10
I want to get the best experience with minimal lag if possible.
Any help would be appreciated.
Thanks