Huh? If changes you made to the client via addons caused the problem, the onus is on you to resolve it.
Unfortunately, this logic doesn’t hold up. If a developer stopped updating their addon 2 patches or hotfixes ago and hasn’t pushed any changes to accommodate things that changed on Blizzard’s end, the addon could be the problem. When you install an addon, you are the tester for said addon. Blizzard is not reviewing whether they work with the game, only that they don’t break the rules/allow cheating.
You should always do two things before asking Blizzard to investigate:
- Full UI reset, including CVARs.
- Reinstall game/start from scratch.
Edit: These are basic troubleshooting measures that have been mentioned thousands of times in the forum, so they’re not coming out of left field.
Edit 2: I’ve been online on Moon Guard for about 40 minutes and still not able to recreate any lag interacting with town elements or other players.