slow thumbnail loading

[shockergit]

Checklist

• [X] I can reproduce the bug with the latest version given here.
• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one bug.
• [X] I have read and understood the contribution guidelines.

Affected app version

latest from fdroid

Affected Android/Custom ROM version

a13

Affected device model

samsung a22

How did you install the app?

F-Droid / IzzyOnDroid

Steps to reproduce the bug

1

Expected behavior

Fast loading

Actual behavior

Sluggish

Screenshots/Screen recordings

No response

Additional information

The thumbnail loading is too slow comparing to other galleries including simple gallery

[Aga-C]

It's a duplicate of https://github.com/FossifyOrg/Gallery/issues/54.