Photoshop CC performance issue with many smart objects

Hi there,

I got some performance issues in Photoshop when using many smart objects.

Due to our workflow sometimes we have about 600 smart objects in a file.

The smart objects are all small (100x100 Pixel).

Photoshop sometimes works fine and sometimes is almost frozen.

I checked Taskmanager and it shows me 10 % CPU, 60 % RAM and the rest is 0%.

The Photoshop seetings allows Photoshop to have much more RAM.

I know that it's many smart objects but is there a way to optimize it?

I could not even upgrade the hardware since I don't know the problem.

This happens in all Photoshop versions.

OS: Windows 10

Photoshop CC 2018

Thanks,

Franz