@tssb Thanks, will check it out

@tssb Your suggestion is working great, now i don't experience any laggs within a few hours of starting the work with Opera. However, it still opening for a while (10-15 seconds) and sometimes lag, but those lags are 1/10 comparing with 10/10 which have been previously.

So the tip switching off the "use hardware acceleration when available" worked amazingly, but still haven't eliminated the issue completely.

Thank you!

@tssb Thats a great tip, i will definitely try to switch on that version if turning off acceleration wont work. Thank you

@tssb i will test it for a few days and come back, thanks

Here is how why opera processes looks like. In total they use around 40% of my CPU, is it ok?

USER         PID  %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
technop+    2130 16.5  3.3 1030840 263788 ?      Sl   22:11   3:07 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --password-store=basic --new-window

technop+    2198  0.0  0.6 467724 51956 ?        S    22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=zygote --no-zygote-sandbox

technop+    2199  0.0  0.6 467724 51436 ?        S    22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=zygote

technop+    2201  0.0  0.1 467724 14340 ?        S    22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=zygote

technop+    3060  4.8  2.1 1000648 173248 ?      Sl   22:11   0:55 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=gpu-process --field-trial-handle=1134785264989874688,16875643739950055556,13

technop+    3067  1.4  1.1 577124 94800 ?        Sl   22:11   0:16 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle

technop+    3075  0.0  0.3 533860 24800 ?        S    22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=broker

technop+    3102  0.0  0.4 510112 36676 ?        Sl   22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle

technop+    3240  0.0  1.0 4814336 84860 ?       Sl   22:11   0:01 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3278  0.3  1.3 4826836 106848 ?      Sl   22:11   0:03 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3285  0.0  0.8 4781040 69764 ?       Sl   22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3292  0.0  0.6 4772848 52924 ?       Sl   22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3299  0.1  1.4 4842496 118772 ?      Sl   22:11   0:01 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3304  0.2  1.6 4860076 127968 ?      Sl   22:11   0:02 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3340  0.2  1.7 4870400 136380 ?      Sl   22:11   0:02 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3345  1.6  2.6 4960364 209568 ?      Sl   22:11   0:18 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3363  2.9  1.6 4878880 128260 ?      Sl   22:11   0:32 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3386  0.6  2.7 4932636 222364 ?      Sl   22:11   0:06 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3395  1.7  1.8 4911808 147908 ?      Sl   22:11   0:19 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3435  0.0  0.7 797684 59492 ?        Sl   22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=utility --utility-sub-type=audio.mojom.AudioService --field-trial-handle=113

technop+    3491  0.1  1.2 4815908 96036 ?       Sl   22:11   0:01 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3653  8.9  2.6 4969012 212980 ?      Sl   22:11   1:40 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    3690  0.0  1.1 4817368 93124 ?       Sl   22:11   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4407  1.7  2.0 4924592 166736 ?      Sl   22:17   0:13 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4428  2.6  2.1 4905212 171360 ?      Sl   22:17   0:20 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4442  0.8  1.6 4857708 131940 ?      Sl   22:17   0:06 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4462  0.0  1.0 4810208 85172 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4480  0.0  1.1 4811232 87992 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4486  0.0  1.1 4810208 88312 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4513  0.0  1.0 4812248 85132 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4526  0.0  1.1 4810208 88280 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4532  0.0  1.1 4810200 88864 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4552  0.0  1.1 4810208 88348 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4558  0.0  1.0 4812256 87676 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4571  0.1  1.2 4815320 97092 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4591  0.1  1.1 4815320 95068 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4618  0.0  1.0 4810200 84948 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4644  0.0  1.0 4810200 85408 ?       Sl   22:17   0:00 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

technop+    4943  3.0  1.4 4883176 116484 ?      Sl   22:18   0:21 /snap/opera/113/usr/lib/x86_64-linux-gnu/opera/opera --type=renderer --field-trial-handle=1134785264989874688,16875643739950055556,13107

And i have 7 browser tabs opened, no videos, no music - only static pages...

Each 10 minutes i need to close Opera and restart it because it stops responding. After a few times i do it i experience freezes and lags during browsing. I don't use any extensions, my add blocker is off. Today i have completely deleted Opera and downloaded it using terminal, so my profile is fresh.

No answers i found on the Ubuntu and Opera forums helped me. I don't understand what is the problem.

My PC is Acer Aspire-A715-75G
8GB Operating Memory
Processor Intel Core i5-10300H CPU @ 2.50GHz × 8

my free -h showing the following:

total used free shared buff/cache available
Mem: 7,6Gi 1,9Gi 4,4Gi 156Mi 1,3Gi 5,3Gi
Swap: 2,0Gi 906Mi 1,1Gi

And is not changing while Opera not responding

I am not experiencing any issues with running any application including games on my PC. The browsing in Chrome and Mozilla is smooth

Best available correcting tool in Opera