Hey Clemens Musterle , thank you for your response.
I understand that with a really light file, from the screenshot in my previous post, it wouldn't need much GPU power to render it. But the point I tried to make there, is that this is the same 'load' on my GPU as it is with a heavy file with millions of polygons. While previewing it goes around 50/65% but with rendering only around 10%, on 1080 or 4k resolution.
So I did some extra testing, like I did in previous times, comparing non-rtx vs RTX enabled on a new project im working on. And this gave me strange results.
I tested on 1080p / 30fps / ultra, a few times.
With RTX, my cpu is chilling and gpu is around 10% load. When I start the process, it takes about 20 seconds from getting from black to the first good rendered frame and then it goes on, which takes 55 seconds in total to render a short clip from a few seconds.
I turned off RTX, restarted enscape ofcourse, saw that my gpu went to around 100% during previewing and rendered the exact same clip with the same settings. It only took 5 seconds to get to the first good rendered frames and took a total 33 seconds to render the total clip.
Redoing everything got the same results. This is totally in constrast to what I measured in the past.
An extra test while trying to render on 4k, same results, rendering (RTX on, only around 5 to 10% gpu load)