We have had a full cycle with lots of server performance profiling and optimization and several notable improvements to garbage collection on the client, so I hope your experience in 9.5 will be better. In general it would help, if people with such issues would join our playtests, as only there we have the realistic chance to get profiling dumps from the affected players directly, as by now the amount of people with issues even on playtest has decreased a lot and the performance issues are no longer as widespread and obvious as they certainly were before.
Playtest for 9.5 will unfortunately end in the next two weeks and 9.5 is now locked down, but given the good experiences we had to use live data and optimization on this playtest, we will certainly repeat that for 9.6