My image is to small when compiled with LuCI

Hi huys, I downloaded 19.07 branch from github and Im trying to compile image for my mr3220v1 I have increased size of image from 4mb to 16 mb (Im planing to upgrade flash)


and I keep getting sysupgrade image in size 3408672 bytes thats ~3,4 MB and when I add LuCI I get 3736352 bytes or ~ 3,7 MB in size . So what Im doing wrong ? My images should be beyond 5 megs
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Edit: Is .confing which they use for my device avilable to be downloaded
Edit2: in my bin/packages/mips_24kc/luci whole size packages is 351,8 kB

Why should it be?

Because when size of flash is set to 4 mb I get tplink_tl-mr3220-v1-initramfs-kernel.bin not sysupgrade.bin and there is no image for my device at latest https://downloads.openwrt.org/releases/19.07.4/ because it can fit on 4mb flash and image should be around ~5 mb

Edit: same image when compiled in ar71xx is 5,4 mb
Edit2: openwrt-ath79-tiny-tplink_tl-mr3220-v1-initramfs-kernel.bin is 5,4 MB in size