which dream cast emulator should i use?

[tyranim]

ok, so i'll begin by telling you my system specs.
dual core 2.16GHz processor, 4GB RAM.
graphics: Display Memory: 1792 MB, Dedicated Memory: 64 MB, Current Mode: 1366 x 768 (32 bit) (60Hz)

next, i'll tell you that i get easily frustrated (which, i know, is counter-productive in the computer world)

finally, i'll tell you that i'm using a windows 10 (originally windows 8.1) ASUS laptop.

oh yeah, also i really only want the emulator to play sonic adventure 2, so i dont need anything that's compatible with a wide array of games. just that one is fine

[Zaladane]

NullDC should run but be aware that you may encounter slowdown once in awhile. Do you know what Graphics chip you have??? I'm guessing it's an Intel integrated one..

There's also a PC version of that as well which should run without any problems.

[tyranim]

i dont think it's integrated entirely into the cpu (like, i think they work together)
here are more details:
Card name: Intel(R) HD Graphics
Manufacturer: Intel Corporation
Chip type: Intel(R) HD Graphics
DAC type: Internal
Device Type: Full Device

[Zorlon]

I can guarantee the emulation of the Sega Dreamcast on your system will be slow

NullDC is your best option, Demul is a better emulator though but that will run even slower

You can get a few games to run smoothly with minimal side effects though but they are very basic games at the end of the day

Integrated can be part of the CPU or it can be a separate GPU chip on the motherboard, anyway Intel(R) HD Graphics are amoung the worst GPU chips and not made for gaming

Please do not think Dreamcast to be as low spec as Playstation it is much closer to the Playstation 2 and system requirements for emulation PS2 vs Dreamcast are almost on par

Also note that both the Current Windows Dreamcast emulators are no longer active and neither are close to being perfect even if you have a top of the line PC, the best way to play Dreamcast games is still via the native console and is one the easiest consoles to do that with for backup games as most Sega Dreamcast consoles can play CD-R's with no modification to the console

PC version of the game is the best option for you