OnlyOffice on latest Nextcloud snap is very slow

I am using OnlyOffice for document work but it is extremely slow to load files for all users. I am running Nextcloud 22.1.1 on installed on Ubuntu 20.04 via Snap. I installed the community document server and then OnlyOffice app as per instructions provided. No other OnlyOffice settings have been changed other file types available for document editing.
What can I do to improve OnlyOffice performance? Some of the suggested fixes around caching, etc do not seem to apply to a snap install.

Server details
Processor: Intel Core i7-6700