So my experience with the Rom Rebuild for Xiaomi 13 Ultra (Ishtar) was pretty disappointing. It consumes battery like crazy, stutters and lags when i pull down notifications or navigate through menus, inserting ghost-charackters when i type and many more minor bugs that add up and drag down the user experience. hope the next update comes soon and fixes a few of these things. And yes, i updated twrp and wiped the whole phone before installing the rom rebuild.