OWA perfomance issue on Exchange Server 2016 due to too much time on garbage collection

Hi guys,

We are testing a 36 server platform to have 50% OWA for 100K MBX. We are having a performance issue around 1K user per server because the server is spending too much time in garbage collection and we cannot increase the number of OWA connections. We see that the .Net used by OWA works in workstation mode (instead of server mode as for Outlook). Is it supported to change it to server mode? Has anyone come across this problem before? How did you solve it?

Thank for your help,

Regards,

Laurent.