Just in case it's helpful, I actually use Tri as my backup/wife/kid connection and I use this as my main connection:
https://www.xl.co.id/id_/broadband/paket/xl-home.html
It has a nice big Quota and doesn't really slow down that much in the peak times, which surprised me.
If anyone's interested, don't buy it from XL, get it on Tokopedia and the modem will be unlocked so you can use it with any provider in Indonesia. It's cheaper too.
Here's an example:
https://www.tokopedia.com/uniqcom/home-router-huawei-4g-b310-fdd1800-tdd2300?trkid=f=Ca0000L000P0W0S0Sh00Co0Po0Fr0Cb0_src=shop-product_page=1_ob=11_q=_catid=334_po=20