This sounds overly dramatic. You may not like the design but its 100% usable.
Also the placement of buttons and functionality is completely scattered around the UIs, which severely reduces usability. What do all the mystery meat buttons do now? One has to relearn all the UX. There's a ton of improvement needed, it's about first-draft level quality.
Dark mode UI elements are almost invisible too, frequently.
It has a "my first redesign project" feel everywhere. On macOS I upgraded right away and it was a huge downgrade on performance. On iPhone I waited until 26.2, and merely had to suffer far lower usability.
On the Mac it’s much rougher than on iOS.
Now I have heard about issues on MacOS and things but not really anything around the phone.
So while it may not be fundamentally broken, it's the type of stuff that would annoy me a lot if I used an iPhone. I never expect to go from smooth experience to a low-end Android phone experience after a software update.
MacOS... I've avoided upgrading my M4 Max MBP so far after upgrading the M1 Air we have at home. It's just not as smooth as before, even with reduced transparency.
My hope was that Apple would be forced to course correct in subsequent releases but that doesn't seem to be happening.
I’m optimistic that they will eventually course correct on Liquid Glass, but we’ll have to wait until iOS/macOS 27, or perhaps longer.
There are parallels to Apple’s butterfly keyboard fiasco on the hardware side. Sleek looking on the surface but an objective step backwards in usability. Unfortunately it took Apple several years to reverse course on that one.
There are also parallels with the original pinstripes-and-transparency-everywhere aqua UI. I am also optimistic that it will be toned down over time but retaining the responsiveness.
Personally I prefer the new behaviour.
But eitherways: it’s just an option.
Hopefully iOS 26.x releases will continue to correct Liquid Glass, but I'm guessing iOS 27 is well down the path with it still integrated. Maybe iOS 28 will see sanity return???
It was not an entirely bad concept for the device it was conceived for, but Apple has a habit of unifying their technologies to all their products and sometimes, like with Liquid Glass, that seriously doesn’t work.
I mean, "computing power" in a literal sense maybe, but does that matter if it doesn't translate to either "workload contention" or "electrical power"?
I think the Liquid Glass effects, similar to smooth scrolling, are mostly just running as pixel shaders on a spare tile of one of the SoC's GPU's Streaming Processors — a tile that likely likely would have been idle-but-burning-power-anyway, given that GPU power management occurs on the level of entire SPs. It's the same reason that ProMotion "smooth viewport scrolling" doesn't really cost anything.
Animating the Liquid Glass widgets (i.e. changing their position or shape), on the other hand, does seem to cost a lot / produce lag.
I get the impression that this is down to the UI toolkit not being optimized for whatever Liquid Glass is doing in terms of recalculating constraints during animations. (When the GPU overruns its time budget while computing shaders for the compositor, the visual effect is of [double-buffered] texture buffers dropping/repeating frames, not slowdown. Actual "lag" in a GPU-composited UI is either from CPU work, or from one-shot CUDA-type GPU "prerender jobs".)
I get the sense that Apple rushed out some shitty code that has some of these components re-evaluating a bunch of their placement and sizing constraints on every non-static animation frame (rather than just giving the Liquid Glass shaders the ability to do declarative tweens.)
Or maybe the shaders already do declarative tweens, but Apple are doing tons of redundant on-CPU per-frame recalculations, to re-do any constraint-based layout for everything around the component during the animation, that might be impacted by the component's current tweened state. I dunno.
Either way, it's definitely silly, and could be re-engineered to work a lot better.
But it's also not really "Liquid Glass's fault" (i.e. something inherent to the visual design); it's just (AFAICT) bad implementation engineering, rushed to give Apple something to talk about besides its failure to launch Apple Intelligence.
You can report an issue by typing applefeedback:// into Safari if you want.
Sounds like you need to spend some money for a new Apple device! /s