we had the problem at VfR2 in the past too, but it was solved there - saving the rendering per save button of the frame buffer needs a to long time. A 4000x2500 image with some channels needs approx. 1 min now. I hope it can be fixed again.
I have this issue too… Saving a single channel, even at 1200px takes a very long time (in respect to how long it used to take with previous pre-3.6 releases).
What image file format do you use as output?
The .png is relatively slow compared to some of the other options.
I don’t think it has been faster in the past.
Yes, png. I tested it here again and it looks like it’s an unstable bug. The same scene needs approx. 1 min last and now a few seconds only. That’s bad, this bug is difficult to catch.