Hello Rocco,
OID .1.3.6.1.4.1.17713.21.2.1.113.0
Range =[1..1000] 0.1% =1;100% =1000
This OID will give you the same value displayed in the Monitor->Performance page, under "Total Frame Time Used" for DL but times 10.
Example:
OID returns: 371
Interpretation: 37.1% of the DL portion of the frame is being utilized
Regards