Hey there everyone, thank you for getting in touch. I understand with the release of TU15 that sessions have become a bit more unstable. I want to assure you that our development teams are aware of these issues and more frequent DELTA codes. They are currently hard at work looking into it. Further updates regarding this will be posted in our News and Announcements section.
Another way you could potentially optimize your system in the meantime is by going through our technical troubleshooting article. These steps can help rule out many of the common causes for technical-related issues.
Additionally, If you have any further questions or other issues you would like to report, please do not hesitate to let us know.