VRM consumption graph has false spikes of 1.0kw

I am getting false spikes of 1.0kw battery consumption showing up only in the installation data graph on VRM. My advanced graphs in VRM show no spikes in AC IN, AC OUT, DC in or out from the BMS, no DC in or out from the in-line SmartShunt, and the SOC does not reflect any load change. 1kw would be 20% of this battery bank. I am wondering where these spike might be coming from?

The system is 2x MPPT, 1x MultiPlus-II 48x3000 with ESS, and 5KW of battery, BMS controlled. The loads are fairly static and small during these periods (50-130w). Everything is hooked into a Venus Pi running 3.50~15, but this has been occurring for some time, and many different firmware versions.