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!