After switchting to NGINX FastCGI and only using Redis for Object Caching the timeouts have reduced on the site monitoring. Will have to see if I get issues when being on site again.
Maybe too many instances of redis in the containers, maybe the hugepage issue not being fixed properly by the wo script or maybe the dumping of the data to disc of redis, or maybe all of it played a part in the problem.
If anybody can give hints on redis, would be great!
Thanks for all the attempts to help!