multisubnetfailover and clsuter parameters

please clarify if it would still need to change HostRecordTTL value if the MultiSubnetFailover= True is set in the additional Connection Parameter at conenct to server in SSMS 2017.  

SQL 2016 standard installed on SERVER 2012 R2

A Cluster with 2 nodes created in 2 subnets

a warning shows "The HostRecordTTL property for network name 'Name: ClusterNAME' is set to 1200 ( 20 minutes). For multi-site clusters the suggested value is 300 (5 minutes)." in the failiver cluster validition report. 

I wonder if it would do either HostRecordTTL value change or MultiSubnetFailover= True. please advise.

thanks

John