XF 2.3 Pictures blurred

[Sisterhood]

Since the update to 2.3, the images uploaded by members are blurry. I haven't made any other changes.

 

[Old Nick]

What processor image do you use? Imagick or GD?
Did you activate image optimization?

 

[Sisterhood]

Settings are not optimized and GD
Except for the update, I haven't changed anything.

 

[Baby Community]

What processor image do you use? Imagick or GD?
Did you activate image optimization?

I have a question: Is there a source where everything that needs to be done regarding the xenforo2.3 update is written?