Issue with Graph Representation

[raptor1]

Good day all
I having a problem with my Graph representation in Cacti
I am using CactiEZ to monitor few interfaces:
Firewall (Outside) , Firewall (Inside) and Core Switch (Connected to Firewall Inside)
All devices are cisco so I am using the Cisco Host Template for the device
I am using cacti 0.8.8a

All graph experience the same issue
On Daily 5 minutes average (last day, last 12 hours, last 6 ... last half Hours) the graph looks OK until the traffic reach about 570 Mbps.
If the traffic goes above this number the graph just give a drop.
as soon the traffic goes below the 570 Mbps everything goes back to normal representation.
I have no idea how to troubleshoot this issue ..

See how Graph looks like on the Core switch interface

Cactiez-Graph-Between Nov18-1023am to Nov19-0300am.PNG (163.11 KiB) Viewed 746 times

Note If on the same period of time I use the realtime Graph I do not see the drop .. and the Graph will show over 570 Mbps

See realtime Graph

Cactiez-Graph-Realtime.PNG (92.85 KiB) Viewed 746 times

[raptor1]

Good day all
Any idea about this issue ?
Any suggestion ?

Thanks in advance for any support

[raptor1]

Issue was resolved using Graph Type In/Out Bit (64-bit Counters) instead of In/Out Bit

Thanks for the support