Our help article linked below offers different troubleshooting you can try for latency issues while playing ESO.
Latency / Lag - Technical Support - The Elder Scrolls Online
ZOS_Adrikoth wrote: »Greetings @Merforum
We're sorry to hear that the steps we provided were unable to resolve this issue for you. If you haven't already, please go ahead and open a support ticket at help.elderscrollsonline.com so that we can assist you further.
Which addon it is? Please tell, i had 10 crash today ffs