It lags a lot, some of the calculations need to be minimized or done in a way they wont eat the memory.
My suggestion is remove the 3D money stack, and the log they arent needed, also try to work around other things.
The game looks good, theres just some small problems with progression where it takes away too long after you reach level 3 or 4 on buildings since you will need to idle far too long to hold interest of most people, since you will have nothing to do other than waiting resources to pile up enough to make the next building or wait hours for the construction to end.
I think that builders slot should be a lot more common like 1 from every boss that way people can start multiple buildings and mix between some fast upgrades with the ones that take 6 or more hours, because even with 3 builders its quite slow when most of your upgrades take more than 2 hours.
It would be nice to have a lot more enemies bellow 1m attack since those are the ones that help more to reach end-game (the wizard spells), after you beat the ones bellow 5m the others are just too strong and require dozens of battles to beat.
Maybe the game could have a rebirth system with increased amount of builders and decrease in buildings prices, that way scalling could get faster and faster.
Game looks good, a save option would be nice, the little cursors do no significant damage after you reach the purple slimes they do scale with time, but the +2 damage from upgrades is away too little imo.
The clicking upgrades like cursor X% damage and guaranteed crit made it looks like nothing could last more than 1 or 2 clicks even on later waves, maybe if the little cursors scaled like that it would be much better.
The extra juice also scale too little later on, but i guess its alright.
Really enjoyed my time here.
It kinda looks away too mobile imo, the switch from the rock to iron in another "window" make me feel like that.
Also the description boxes are away too big for the amount of text it shows, and some of the descriptions arent really needed to be on a hover text it could simple be a smaller text somewhere.
The school thing is cool and all, but seriously even if they are simple math questions at begin its a feature that makes it not good imo, maybe if it was a automated feature something like this, a student answer the questions where it has a % of answering correctly and as we use books it would get a higher %, in a way it would make things easier and less rewarding to good math players, but it would make the game more acessible since not everyone is good at math even through like i said they are all simple questions till D+ (the rank ive achieved)
Would be nice if the cost of potions and jewels reset after every ascend, you could increase more the price after every buy but reset after ascend.
Jewels having a expendable charge while the price keep increasing is quite bad imo.
The extra exp/gold gem could be changed to be % instead of a flat amount, because the way its now, its easier to level and farm gold on low hp enemies that you can 1 shot.
The study could be changed to talent points that you get after every some levels, because standing there doing almost "nothing" wont make the game any extra fun, or you could change it to "training" and passively get exp on it as you still kill enemies.
Other than that theres a few other things, but for now i guess this is alright.