My name is Crystal Stegmiller and I am a Escalation Support Manager on the Microsoft CRM Technical Support team. My team supports the Microsoft CRM Connector. We do have a few offerings that may help in your scenario.
First, if there are any break/fix issues (errors, area of product not working as intended, etc) my team can assist through a standard support case. In regards to your comment "partner support currently not working" do you have any specific cases you can provide me so I can follow up on those?
We also have Advisory services we offer to partners. Advisory services would cover scenarios such as performance tuning, implementation best practices, training, etc. The services my team provides are up to 20 hours. That type of service may help in this scenario, as often performance optimization is specific to each deployment.