@aguidrevitch Yes Alex I got that notice and the issue we where facing was Unused CSS file deletion option which is in BETA and when we disabled that option, website back to normal.
We have also disabled Delay JS Execution option from WP Rocket and activated MP Meteor instead for this feature. WP Rocket support team wrote to us to disable WP Meteor and activate Delay JS Execution in WP Rocket and when I did so, the speed Metrix score affected.
Alex I sincerely believe that you should come up with some best solution in coming updates about the compatibility issues with WP Rocket. Since WP Meteor is best work with WP Rocket and most of users would like to keep both.
Hope you note my point
Thanks
Vivek