Slow and intermittent failed WiFi connectivity with Macbook Air M1
I have recently changed from MBA 11" to new MBA 13" M1 2020 ( running on Big Sur v11.4 ). Have been encountering problem with the WiFi connectivity, especially when the signal bar is <=2 bars. This issue happens to both 2.4GHz and 5.2GHz/5.7GHz.
Brief of the issues:
- Apparently, most of the time I got no Internet connection esp. once it got connected from switched off. It took a while ( ~2-3 mins ) before it got any connectivity. During this stage, WiFi is connected with both IPv4 and IPv6 assigned to my MBA. Noticed this mostly happens to those IPv6 site, and it improved after I'd changed my IPv6 to Link-local only.
- Most annoying scenario, found that the intermittently latency to the router can be as high as 150~200ms that cause extremely poor upload connectivity. Additional info below:
- I am quite sure it has nothing to do with WiFi interference or router issue. I had tested with several WiFi router / places and scanned thru the surrounding WiFi channels. No similar behaviour/issue if I place my old MBA 11" at same spot and same time.
- Another obvious case esp when I am on video conferencing. My video is bad and voice become breaking to the recipient whereas I could see and hear them very clear.
- Upload a 5MB file to online storage like Google Drive take ages to complete.
Is anyone experiencing the same like my case? Not sure if this is hardware or WiFi software or settings like MTU issue? Can anyone please help and advise?