Using a PPC GLP-1G70CWWS Moca POE filter that is DOCSIS 3.0 with a CM1100 DOCsis 3.1

[mjmilde]

I was having wide fluctuation is speed and Xfinity (Comcast) advised to install the PPC GLP-1G70CWWS MoCa filter.

This filter states it is DOCSIS 3.0 and the Modem CM1100 staes it is DOCSIS 3.1.

Can a MoCa filter with DOCSIS 3.0 be used with is Modem? If it can be used, is there any negative effects with using it?

[FURRYe38]

Before trying that,

Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html