I recently have been working on my retro pie project in which I am using the adafruit 2.8" tft screen https://www.adafruit.com/products/1601 with the pocket pigrrl img https://learn.adafruit.com/pocket-pigrrl/software-1
And I was able to add some games (nes, sega genesis, gb) and some worked okay like Mario land (Game boy) but when I tried to play sonic 1 (I tried sonic 2 as well which had the same result) it was sloooooowwwww! the sound was bad sounding and I felt like I was playing in 4x slow motion! also some nes games worked okay but at times the audio was kinda bad sounding and one game was like sonic in that it was slow with bad sounding audio but the problem only started after I started pressing buttons (for those curious it was Afterburner 2)
Why is this happening? I am using a rpi 1 b+. Is the b+ not capable enough? I would really appreciate some help here. Thx for your time.