To whom it may concern, I have previously sen out an email about this topic but just wanted to run this by community again incase it was missed. I have the following issue. The firm I am currently working at is running OpenStack at sale with circa 6000 different projects. Whenever we try to access a projects tab via horizon we experience a timeout (accessing through the API works fine). For the horizon team, we were hoping to propose something akin to filtering/dynamic listing in order to rectify the issue. For the keystone team, we were wondering whether there is anything we can do with the API in order to simplify the aforementioned horizon proposal; we are hoping to get both teams on board. We are ready to open up a bug report and start subsequent development should this be supported by both teams! I am available on the both Openstack-horizon and Openstack-keystone irc channels under the nickname sdrozdov, please feel free to reach out. Best Regards, Sergey Drozdov Software Engineer The Hut Group