Interval for old graphs

We have zabbix feeding data into grafana and our graph’s data points are in 10 minute intervals and this has been working fine for months now.
When we look at data from like a week ago, we notice that the graph’s data points are in 1 hour intervals. We checked zabbix but in zabbix the data from a week ago is still in 10 minute intervals.
Is there a setting in grafana to force it so that the data point interval is 10 minutes regardless of how far in or out the time range is set to?