viewport lag from 1 tree

[Anonymous]

I've attached an image on what I'm working on.

It's my first tree, or first anything really. 

I wanted leaves so I started with one box and made it a weird shape, then cloned it 5 times and grouped that. then pasted that group 5 times and grouped all of them, then so on until i had these massive clusters of leaves. there's about 5000 of those little individual boxes at the moment. It is lagging alot BUT I checked task manager and cpu, ram and gpu are all below 30% usage yet the viewport is lagging to much. I tried performance mode but nothing really changes.

Me being a Karen, I thought this would work, and it looks good! is there a way to fix this lag or can someone suggest how to stop it lagging? can i save this asset and import it somehow? Thanks. I want about 20 of these trees in my scene in unity for a class project. 

SPECS:

core i5 - 9400f

Radeon rx 5700

32GB 3200mhz ram

[bioclone_ax45]

Not used to work with plants (tbh I barely expended a couple of days on this) but As long as I know most times the leaves are made using only planes, and not cubes (that are actually at least 6 times heavier if not more)

Also, to compare, and/or get easy props, you can use the AEC Extended -> Foliage option (on the basic shapes, using the drowdown menu) , to spawn some decent trees for your proyect, that are based on planes if im not wrong

[CAMedeck · Accepted solution]

I would recommend ungrouping all the leaves, select them all, and use the Collapse utility to make them one object.  

[Anonymous]

thankyou, this works very well.