@Raimondas Until the bug @ncw mentioned in the Azure blob SDK is fixed I suggest you stick with rclone 1.52.3, that version works fine with low memory usage (can't say for sure about CPU but I think the high usage might be related to garbage collection).
See my original post about the problem here, I think it is the same as yours: Rclone 1.53.3 memory (leak?) problem