Why Nighthawk MR51100 with better results then Nighthawk MR5200?

All my gear are wifi 6.

5 IPhones 12 and IPhad Pro M1 2021. 

(I am not using any device on this network that is not Wifi 6).

I do livestreamings and I notice a lot lower latency with my old Nighthawk M1 router then I have with new Nighthawk M5 and I don´t understand why but I hope to have some answerson this forum in hope a future update can fix it.

My old M1 is much more stable then my new M5 like my pictures shows.

I did other posts that I cannot delete about this subject, this one is much more sintetized and accurate.

I leave here 2 imagens that show exactly my problem with new M5 latency,

Nighthawk M5200 (wifi6)Nighthawk M5100 (Wifi 5 old model)

This is all about Wifi 6 latency network (internal Wifi 6 network), not 4/5G smartphone internet speed.

Can anyone from Netgear elaborate something about this situation?

Old router have a price point of 300€ and the new 800€ in Europe and after this tests I don´t undertand why anyone will buy this new Nighthawk M5.

A lot of people buy this router for livestreaming like me.

I really hope this situation can be fixed with some firmware updates.