Zen using more resources while using adblocking dns then ublock.

[Pns2051]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

I have been using zen for 4 days and im loving it . So , i was gonna turn it into my primary browser . But i noticed something strange . At first i could use ublock in zen for testing the browser . Then i setup Nextdns in my device . Then the wrong things started . I saw that when i use ublock the ram usage would be around 1300 to 1900 and the cpu usage around 1.2 to 15 percent . But when i disable the ublock and start my dns to block ads . Suddenly , the reasouce usage spikes up to ram usage 1500 to 2500 and the cpu usage 2.1 to 20 percent . Meanwhile the amount of tabs are same . I was using 4 or 5 tabs while taking those pics . I didn't even setup the dns in the browser . Instead i set it up on my ** system network preference section** .

Expected behavior

Some people will say whats the wrong extention using low resources. The prob isn't with the ext but completly fundamental. You see the concep tof adblocking dns service like adguard and nextdns , is using them to block ads without using any resouses from the device instead it removes the ads and trackers from the associated server . As a reasult resource intensive tasks like adblocking has become versy efficient by using them . Other then using resorce heavy extentions.Thats why my browser was supposed to be using more less resouces then using extensions.

Actual behavior

But what is happening is completly like uno reverse . while using dns zen using more resouces then using ublock .

Steps to reproduce

well reproducing it quite easy

1. check out nextdns.io .Creat a account in it and set it up on ur device .
2. set ur dns preference to default.
3. check out the task manager and u will see it .
4. And yeh im using adguard , nextdns 1host lite , osid blocking list in the dns . So amke sure to set it up .

Screenshots and videos

this is the pic of zen resource using while using dns

and this is the pic of zen using ublock

Version

Windows 11

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Performance

Relevant log output if applicable

[Propheticus]

To make sure the system set DNS is used go to setting > privacy & security (as URL: about:preferences#privacy) and scroll down to the 'DNS over HTTPS' section and set it Off.

An increase in CPU & Memory could be explained by the possibility that less content / trackers are actually being blocked now compared to before.

[Pns2051]

To make sure the system set DNS is used go to setting > privacy & security (as URL: about:preferences#privacy) and scroll down to the 'DNS over HTTPS' section and set it Off.

An increase in CPU & Memory could be explained by the possibility that less content / trackers are actually being blocked now compared to before.
i used the same settings u told me about . Same reasults . Could u pleas help me out in discord . usename ssit2051

[Propheticus]

An ad Blocker actually blocks the code (Javascript - JS most often) from being loaded. A DNS solution only prevents the route to the actual advertisement from being found. The page's JS will still load and try to fetch ads (but won't succeed). This failed fetching and multiple processes retrying their connections can actually cause some load.
AdBlockers also block trackers (also JS) your DNS solution might not.

[Pns2051]

Oh , now that explains it

[Pns2051]

Thnx