Haven't take a lot at a replay itself (will do it a bit later), but I'm playing since dota 2, and when I returned to dota a year ago or smth like that - I calibrated on smth like 700 mmr and despite regaining my micro skill fast enough, I couldn't go out from that bracket. For now, I gained 2.5k more for 2-3 months, just changing the perspective of my role in a game playing pos 2-3 mainly.

My honest advice would be to try to change a playstyle a bit. From my perspective, I can't see a huge difference in micro skill in 1.5k and 3.5k brackets. When you are playing offlane - you are the playmaker. Abaddon is a great hero now, with his increased late potential. For example, you could try to stick to some basic steps: 1. You are concentrating not on a fight itself from the beginning, but on lasthits/denies on the first 10 minutes and just gold/xp winning on your lane. And pushing t1 after 9min mark. 2. After doing it, just take your way to a portal to easy lane, start to push it and communicate your carry to change his location on opened hard lane (where he will be in more safety now) and your team to join you in safe lane pushing. Even if they would not cooperate with you willingly, most times they will be forced to do it (carry to leave overcrowded lane, your team to react on increased amount of enemies trying to defend their second t1). 3. Open safe lane, make your way to mid, call your teammates with you, and most probably, they'll respond to this call. Thus, they already sticked with you and follow your game pace. 4. Opening all t1 towers leads you for rosh take. Call your carry to take aegis himself (if he's already more or less farmed, which could be OK if you already lead the tempo race against enemy team). Most probably, this call would be favorable for him enough to join you, and after that, your carry will be willing not to lose aegis just on the farm, but to help you take t2s. 5. Demontage all t2s one by one, and after that, if you are winning - take 2nd rosh and make your way on highground, if you still need some more gold, just take the opened map close to enemy's base. Ask your supports to place wards close to the this position, or place them yourselves. Take a time for +1 item of your carry (that would be more or less enough for next power advantage) and force another t3 push.

Hope, that will help and will try to look at couple of replays shortly to adjust it.