I’m following this description of the problem:
I tested 3 cases. In all cases, the /tags page is pretty slow due to rendering. At 4000 tags, it takes about 1 second to load. Navigating away from that page is also slow, probably because Ember is unloading all the components.
10k tags, no tag groups: no problem with tag inputs that I could see.
4k tags, one tag group per 25 tags: no problems
4k tags, one tag group per 25 tags, each tag group has a parent tag: also no problems.
Performance of tag inputs seems the same as if there were a low number of tags.
I tested inputs 1 and 2 in above screenshot, and they were fast. @Destry_Hunt Am I testing your situation or is there something else you’re doing?