RT-AC87U GUI problem ??

[VANT]

I use latest asus fw, i do factory default and i still have bug with cpu usage value ram, etc....show Nan%

On Merlin FW is ok, but im interested why on asus i have problem....
I use ie11

 

[L&LD]

Because RMerlin firmware takes care of the Asus bugs?

 

[VANT]

i know that

but really asuswrt is so bugged?

next bug, i change timezone but cant save this becouse gui show unchangeable dst time zone start and end......
Without RMerlin this router is unusable.....