It's not that Astro "forget"...
I can see that Astro is gradually moving away from IPTV platform, and embrace OTT platform to cater both TV and your smart devices.

Astro IPTV with Maxis / TIME Fibre is still the same old package rates to new customers, like 10Mbps RM148/month all those. Because they stingy? Maybe.
Although Astro IPTV with TIME Fibre, they've upgraded its existing customers to 100Mbps and above for free, but it doesn't apply for new customers.
But it is assumable is because of the agreement between them (Astro and ISPs), that's why they're unable to revise/offer new package price to new Astro IPTV customers.

And the costs to operate IPTV, maybe Astro don't find it that feasible anymore? By moving to OTT platform/medium, it can be 1 platform that can cater both set-top-box (e.g. Ultra Box) and Astro Go.
Also, last time Astro introduces Astro IPTV to overcome customers issues that stay in condo/buildings that uses the older centralised dish systems. Now for those that already in coverage, they're able to enjoy PVR service on PVR box, and (also the workaround) to solve the signal conflict issue with HD channels where they're unable to watch all/some HD channels, and many others, which I'd explain if someone is interested to know, because it's damn technical that you might get bored and yawn.

Now, I believe many of you guys realised is, whatever VOD content you see on Astro Go, is also what you'll get on Astro Ultra Box. Because Astro consolidate it into 1 platform.
Sounds like kill 2 birds with 1 stone, right? So why not?

With OTT, as long the device (either the STB or Astro Go) is connected to Internet, you can get the services instantly already.
Just like when you subscribe to Netflix, as long you connect your device to Internet, you can get your shows already.
No need to configure those complicated router settings, like those VLAN, works only on LAN cable, "dedicated bandwidth for TV service", and others. It's kinda complicated for Astro IPTV, and even Unifi TV...
And since consumers likes things simple, so Astro and even now Unifi TV is moving towards this trend with their Unifi TV Plus box and their latest unifi playTV app too.

In contrast to Astro & Broadband, your Astro TV service rely for satellite dish for signal, while Internet service provided by ISP (Maxis Fibre), both works as standalone (as if both doesn't have full dependencies with each other), and billing is all under one Astro bill but with some monthly rebates that lasts throughout the contract period.

The main advantage on Astro IPTV that Astro & Broadband still can't fully "replace" is, the legendary and infamous rain fade issue.
Despite many Malaysians would blame Astro for that, but the nature of using Ku band satellite is really like that one. Reason also very technical, so better just search on Google if you wanna know.
But as you can see that Astro implements cloud DVR feature, where now you can restart your programme ("Play from Start") on Ultra Box and Astro Go.
This could be a good sign that they might be heading towards this direction that allows viewers to switch or maybe auto-switch to Internet OTT based when there's no satellite signal due to rain fade issue.
But still, it takes time.

The seamless switching part, hard to say. But I can see that, there is a possibility there. As in will they really implement that for real, it's still unknown yet.

Does this issue also happen on other browsers/devices/computer/network (try compare the difference between your home WiFi and mobile data)?
You tried clear cache (app or browser), log out then log in again?

I just tried using Astro Go... No issues for me though...

sorry for disturb, why all RTM & Certain Media Prima channel (which already convert to HD at.MYTV) still not become HD at Astro Platform?

I opted for Ultra Box just because the old PVR is coming to end. The firmware was upgraded but the hardware has hit the limit. Getting slower response and sometime just need hard reset.

I did not expect the new box is good in PVR section but it is worse than my expectation  . Press forward or rewind takes time to execute and response is clunky. Recording when forwarded can jumped back to beginning probably due to recording error in indexing, recursive I'd say    I know my Internet speed is more than enough, but I'm not sure on the Astro side or the cloud server service provider (if not by Astro itself). The main reason of still using Astro is for its programmable recoding. Manually search and programming other recording device is too tedious 

Probably there is limited spectrum that is available. Lower band is used by LTE but lower band also would give Astro limited channel. The 10GHz spectrum is not suitable for tropical rain area like Malaysia. Need to go lower than 7GHz to get better availability of service. 

Cannot remember but since the box is always on, it shoujld be the latest.

Even the new UHD box I experience 3 times already no response when try to switch on. Has to press and hold power button to restart. I guess probably overnight update?

i see some you using the acronym OTT
i searched posts in topic, still can't find the meaning of it

OTT = over the terrestrial ?

If we select Play from start, is it still using satellite or only internet?
If only internet then there will be no more rain issue right? Never tried it before.

I know about cloud storage stuff but I still think that the service for the cloud Astro is using still not good. I know the PVR use the HDD and the reason why the external drive to UBox is not implemented most likely due to copyright issue. This is the same reason why certain channel cannot be recorded because cloud storage is not something secure. The internal HDD in PVR is on proprietary format that cannot be just copied out.

Make a complaint to Astro about this, and also tell them the troubleshooting steps you've done,
so that they no need to repeat the same similar thing as what I told you earlier, and start the investigation faster and find out what issue is it.
Do update with us about this matter too. 

In contrast to Astro & Broadband, your Astro TV service rely for satellite dish for signal, while Internet service provided by ISP (Maxis Fibre), both works as standalone (as if both doesn't have full dependencies with each other), and billing is all under one Astro bill but with some monthly rebates that lasts throughout the contract period.

The main advantage on Astro IPTV that Astro & Broadband still can't fully "replace" is, the legendary and infamous rain fade issue.
Despite many Malaysians would blame Astro for that, but the nature of using Ku band satellite is really like that one. Reason also very technical, so better just search on Google if you wanna know.
But as you can see that Astro implements cloud DVR feature, where now you can restart your programme ("Play from Start") on Ultra Box and Astro Go.
This could be a good sign that they might be heading towards this direction that allows viewers to switch or maybe auto-switch to Internet OTT based when there's no satellite signal due to rain fade issue.
But still, it takes time.

Be mentally prepared to say goodbye to your PVR box, and then upgrade to Ultra Box. You can't retrieve all recordings made on your PVR box, and several functions and features that u used to have on PVR box won't be available on Ultra Box. Read the previous posts to know more.

Try tell Astro you want to replace to a refurbished PVR box instead, cuz since last year Astro been telling customers that there's no new stock for PVR box anymore, and "not sure when" the new stocks will even be available.

So far only got to the point where the only create case number..... and they said “please allow our technician 48 hours to check on this matter”

Didn’t ask me for phone number, etc

Contacted them via Twitter

"Unusually high volume" is a biggest bulls**t you'll ever hear from Astro for years.

Let's be real. Does Astro customer service ever experience "unusually low volume" of customers calling in or requires assistance? Astro got such thing as "less people call in" or "less people needs assistance"?
Maybe. I guess that would be during midnight.

Astro haven't reply to my DM about the status of the investigation..... and other people have the same issue with astro not replying as well
"slight delay" - already more than 6 hours

Is it still happening now? On any random shows, or certain shows only? How about live TV playback?
I mean who knows the issue is "gone" already?

I personally don't think is the Internet speed issue like what Astro ask you to do.
You try go to the Settings on Astro Go, select Registered Devices, then remove all devices (except your own Astro box, if have).
Then clear browsing data (especially cookies, cache, etc), then see if issue persists.

Any customer service will just provide standard troubleshooting step. If everything's not solving the problem, then "We will look into it. Please provide the step on how you encounter the issue"

The more more you ask the higher you body temperature 

I'm currently using the old HD box that cannot do anything besides switching channels 

I do stream / record shows on Astro Go sometimes. Since ways of using it is similar with PVR, I guess it would be ok if I just directly upgrade to Ultra Box (?)