You can use dinit-userservd to run services as user services.

I was trying to see if its a Vivaldi problem or an old CPU problem.

Almost all WMs have this feature

Try how much memory usage you get on Firefox.

KOreader is the best

Yes, they submitted initial patchset to Linux kernel back in October (1 day after snapdragon X announcement). On Qualcomm’s website they say that full support for the chip will be merged into Linux kernel within six months.

Did you check if kernel module for audio is loaded?

I mostly use a download manager for parallel downloading a file. (downloading multiple parts of a single file at the same time).

You should change the title, as it is the continuation of the story. People will think its the same story being repeated.

You won’t find it in the west. Its Infinix X6831

Only with audio jack

I have infinix Hot 30. At least they allow bootloader unlocking which is becoming rare these days.