Yeah it happens often. I personally started enjoying it halfway through Act 1 but i can see why a lot of people dont enjoy it too much. If you didn't like Act 1 and Act 2 AT ALL then its probably not for you, if you liked it some, but just not as much as you feel it was hyped or something then i'd advise to keep reading as it gets way better eventually starting in act 3.
It has about 24 main characters and around 70-80 supporting ones (some people will disagree on my number of main characters but thats how i feel it, counting the 8 kids, the 12 trolls of karkat's group, aranea, meenah and the 2 cherubs)
Anyways
You are post-sgrub Aradia Megido. Someone who seems cheerful most of the time. I dont know you much to really be accurate tho
You are Meulin Leijon. I don't know you too much but from what i have heard you are someone who has a really cute personality and is very loyal to their friends.
It's a very long webcomic (Homestuck is about 274% the size of the Lord of the Rings, 170% the size of the King James Bible, 122% the size of the Harry Potter series, or 75% the size of A Song Of Ice And Fire (the five books so far)) that is also pretty deep but is often frown down at because of how cringe the fandom gets sometimes and how boring the first two acts are so a lot of people dont even give it a chance.
Anyways
You are Karkat Vantas. A born leader who has a very nice heart but can (often in his case, ocasionally in yours) get hotheaded if someone is being a crap to you or someone you deeply care about.
You are also Sollux Captopr. Someone that is always a good pal to everyone and want the best for most people. Both of you were leaders for a short period before giving it up to someone else due to different reasons.
You are Jane Crocker. Someone really caring of her friends, with almost motherly care. You have your own amount of problems and insecurities but you don't let them affect you and usually are in a good mood, but you can get mad at people if they you off.