I'm on Sky fibre with their second gen hub and was having horrible issues around 3 weeks ago - crashing on zoning and randomly crashing when changing weapons, equiping things in the quick bar and attempting to cast PSI modules. They seem less prevalent but still apparent (prior to yesterday).

I've gone from onboard (unsure which one) to dedicated NIC yesterday (Intel EXPI9301CTBLK PRO1000) and crashed once - but wasn't present during the later fight where most people crashed out and died. Further testing recommended before a verdict is reached!