WebAccess Slow Sometimes

Running GroupWise 18.2.1 on SLES 12 SP5.  Sometimes, WebAccess can run pretty sluggish. Logging in is quick, but loading messages, changing folders and opening emails seems to hang at random times.  

I came across this document: 

https://support.microfocus.com/kb/doc.php?id=7017423

Are any of these tweaks applicable to my setup?  Would they help?

Thanks