Increasing cpu load

I am testing with the new 5.4 SDK and found out that the cpu load slowely increases with time.
it happens with own custom build sw, but also with sample applications.
Is this normal behavoir?

for example:

2 zed camera with object detection starts with 140%

it grows every second with +/- 0.2%

after 5 minutes it is 189%

I saw after hours much more cpu load.

tested it on nvidia orin 32GB with duo capture card.

and on vecow eac-6100 and eac-5000.

I also saw lower fps after some time, but I am still investigating this.