g.imp enabled strange max atain upstram

Hi all i have been having lost around 5mb of sync speed last week when g-imp got enabled on my ECI CAB

i didnt knoitice it enabled untill i updated my modem the bilion 8800AXL.
mabie i was enabled before and i have a line fault problem but my max atain upstram is very unstable!

Going up and down like crazzy

Could this be a line fault i ahve been get loads of errors even bofore G-IMP i have less errors now but my speed has droped! about 4/5m

anying i can do to improve things?

iam on an eci cab