when I look at all of the trees in my factory, my FPS/UPS would drop as low as 15 FPS/UPS while running this on a 5060 with a I5-14400.

I noticed that as well, when zoomed in. If I had to make an educated guess, I believe that the decoratives placed when each tree is planted is causing the lag. I will significantly reduce the amount in the next update. If you place concrete or foliax bricks down where the plants were, it will remove decoratives around it, then just pick them back up. It looked good but at scale, it seems to be an issue.

Thanks for the report.

I also significantly reduced the amount of particles created when a plant is harvested.

looks like that fixed the issue, thank you.

wait never mind, it didn't fully fix the issue, when I look at the trees, It will sometimes cause lag, this screenshot is what I see that is causing FPS drops.
https://imgur.com/a/IjbDyaU

yea the decoratives are on the map and loading them causes the lag because before each tree would drop about 10 new decoratives down and they stack.

if you clear them out with a decorative removal mod or by placing tiles, it should solve the issue. now trees maybe will drop 1 decorative on planting.