MobiMatter eSIM Data Plans for Taiwan

So far all the esims I've got with mobimatter worked flawless, in Taiwan I had to adjust the connection network manually once, but it was a minor issue.

Cheap, but bad connection quality. When surfing, it get disconnected regularly. For voice calls, it gets disconnected so often that it's almost impossible to talk.
Opened a ticket several days ago. No news...

Reselling cards from 3HK, which is normally alright (Korea, Japan, etc) but not Taiwan. Latency when using this card in Taiwan is very high, over 200 ms (Hong Kong is less than 100 Km away). Also a lot of sites block access with this provider, including Netflix for example. Speed is alright, but latency makes it at times unusable.