Woah, what is going on? What's your net alloy income and fleet power? Those numbers really surprise me. Doesn't look like a tall game to me, at least. I have +85 net alloys each month and 10k fleet power at 2300.
Well, I said tall
ish.
I went in hard for pop growth, and was lucky and found a Gaia world 2 jumps from my home system, in addition to my two guaranteed colonies, so I pretty soon had four planets growing at top speed. Then I got even luckier and found two black holes with a hyper-lane connecting them. So I dedicated a science ship to going back and forth. After half a century of one poor guy doing nothing but that, I got the Horizon signal. A few decades after that I got 10 newly habitable planets in my home system, so in 2298 I queued up six colony ships, building 3 in parallel, jumping me from 7 to 13 planets a few years after that. By now (2335) I have 29 star systems, 8 colonized systems, 17 planets, and 868 pops. I guess that qualifies as "what is going on".
As to whether it qualifies as "tall", right now I'm 65 over administrative capacity, but early game I kept to strictly no more than 20 over. All my star systems and those 7 pre-Loop planets was obtained under that rule, though at some point in the 2280s I started building district in excess of that.
My alloy gain is 348 (+451 produced, -53 ship upkeep, -50 monthly trade). My current fleet power is only 14.5K, and I haven't built anything bigger than a cruiser, despite having researched titans, but I've also got 3 citadels of 35K fleet power each protecting the only entrances to my space (wormhole included), so I'm pretty safe against anyone without jump drives, which as far as I can tell only I and the fallen empires got...