Runs bad, missing

Hi there. I have the car listed above (SI model) and i really need help. it runs pretty rough, it’s missing in one cylinder (first cylinder), back fires very bad at high RPM’s, and likes to just shuts off while sitting if i don’t keep the RPM’s up. However, i have changed the plugs, wires, distributor, rotor, and fuel injectors. i have done a compression test and everything held up good there. i also checked the timing with a timing light and it stayed in time but skipped time whenever load was applied (revving the engine in neutral). I have read some about these cars and am kind of leaning towards either the timing tensioner is loose or the belt itself and it’s skipping time. i figured i’d get a second opinion before i went ahead and bought the stuff because i don’t know too much about Honda’s. anyone know what’s going on? thank you!