Back on topic - if you have posted about this in the Suggestion Box forum there is nothing more to be done. We moderators are not developers and have no say in what features are added or removed. Therefore this thread is closed.

demitsuri : How to make Opera 46 not to load all tabs to memory by default?

leocg : Don't keep tabs opened.

demitsuri : Not a variant. Other ideas?

leocg : Maybe upgrade the computer? Sorry, there don't seem to be any solution other than deal with it.

That behaviour of opening tons of tabs was working fine since forever (I stayed on Opera Presto until it got implemented in Opera Blink), and is available on at least Vivaldi and Firefox.
I don't think I should have to upgrade my computer to 16 or even 32 GB RAM just to open the session on tabs I could open without troubles before.

leocg : So why keep those tabs opened? If I have some tabs opened when I start a browser is because I - and I believe also 99% of people - want them to load as soon as possible at browser start up.
If not then I would bookmark those pages or get them from history.

Beleiving that 99% of the people are doing just like you is pretty self-centered. In my friend group, I know at least 10 people who are keeping tons of tabs opened, and I'm not assuming we're the majority.

The thing is, Opera isn't used by a majority of people, it's like 1 or 2% market share, and is (or at least was) pretty centered on nerd and power-users, which are more likely to keep tons of tabs.

Bookmarking, and then finding that bookmark again are actions that I didn't need to bother with before, and other browsers like Vivaldi and Firefox don't require me to do those actions.

leocg : And what if the problem is not the pages being loaded? Unless you are talking about very heavy ones, web pages loading should not cause any major issue.

Try to open 400 pages, and let's talk again.

demitsuri : Store tabs to bookmarks, and then open them back - Usability => 0.

leocg : Well, it's just one possible way to handle the problem you've created, there may be others.

leocg : Yes, you. You were the one who decided that you had to have a bunch of tabs opened all the time.

A problem that we created, really ? We were just using one of the features of Opera (which used to be a stable feature not an experiment in Opera Presto).

And saying it again in case you forgot, Vivaldi and Firefox have that feature built-in.

ghostlogic : Seriously? That feature was an experiment? For how many years?

leocg : Years? I don't remember it had been running for so long. At least as an Opera flag.

Googled it, Opera 21, March 2014 : https://blogs.opera.com/desktop/2014/03/opera-developer-21-0-1432-5/

To sum my message up (or TL;DR as they say), leocg, you're too close-minded, there are couple of users complaining about a feature that was there for YEARS, that Opera was the first to put in the Presto version, and that is nowadays copied by other browsers (at least Vivaldi and Firefox), that feature is then taken out which makes it hard to open Opera on high-end computers, and yet you insists that the bunch of us complaining were using it wrong, just because we're not using it exactly like you.

I have lazy on but it doesn't do anything

It should delay the start of background pages loading.

I think it's on hold while they trim tab hibernation to the polish. Tabs aren't hibernating either.

As far as I know, tab hibernation was removed a long time ago.

Take note, Opera devs.

devs team will not look for this page. Just a jerk running around

That feature was an experiment?

Everything in opera://flags is a experiment and either can be turned into something regular or just be removed.

In fact the default behavior of the extend lazy loading flag was the current one but some people used to disable it so background tabs wouldn't run until become active.

For how many years?

Years? I don't remember it had been running for so long. At least as an Opera flag.

Why has this option been removed?

It wasn't really removed because it wasn't really implemented. It was just an experiment that has ended and like the warning in opera://flags says:

"These experimental features may change, break, or disappear at any time."

Okay, so this is the problem I'm having

What problem? Loading opened tabs is the expected behavior of a browser so I don't see a problem with it at all.

If opening pages are causing issues, it has nothing to do with the existence of the 'extended lazy loading' flag and should be discussed in a separated topic.

Installing third party tools to fix problems in my browser isn't a viable option for me.

You wouldn't be doing it to solve a problem but to add a feature.

I guess I'll go back to Google Chrome until v47.

Opera 47 will not bring back the 'extend lazy loading' flag, Opera 48 neither.

Like I said before, anyone can request a option to not load background tabs on startup in Suggestions Box.

How to make Opera 46 not to load all tabs to memory by default?

Tiny Suspender - it preserves the icons while suspended

Another alternative:

Install 'Download Chrome Extension'
https://addons.opera.com/en/extensions/details/download-chrome-extension-9

Install 'The Great Suspender'
https://chrome.google.com/webstore/detail/the-great-suspender/klbibkeccnjlkjkiokjodocebajanakg

New tabs created after the install will be suspended automatically

could you simply say "because some other browsers have similar feature so we decide to make a different by remove the feature that other browsers copied from own browser"

I don't make Opera nor work for them so I couldn't say such affirmation.

so please bring back lazy load for a few months, until edge is stable, firefox a bit better, and we have time to leave

There should be a few requests on it in Suggestions Box already, you can show your support there.

I created. Of cource

Yes, you. You were the one who decided that you had to have a bunch of tabs opened all the time.

when did you become a total jerk? could you simply say "because some other browsers have similar feature so we decide to make a different by remove the feature that other browsers copied from own browser"

so please bring back lazy load for a few months, until edge is stable, firefox a bit better, and we have time to leave

I open by deafult three tabs, opera starts wery slow and lag a lot then. Every new tab take about 3-6 secont to event show starts to loading. Browsing is wery slow.

All Other browsers works correctly (Chrome, Firefox, Vivaldy).

Intel Xeon E3 1270; 8Gb Ram, SSD