Tried use some download tools to “benchmark” the wireless speed.
And I found out the low speed will keep for like 30 second, after 30 seconds, the 802.11ac wifi speed will go up to 180Mb+
(My broadband limit is 180Mb+, so don’t know what’s the real limit)
I didn’t try downloading something for more than 30 seconds but I witnessed the same problem.
Both laptops had some Intel AC wifi cards. Tried it with two different hap AC routers and speeds didn’t go above ~25mbit.
On 2.4Ghz network they got much better results.
We just made additinal tests. A few laptops with these Intel cards showed terrible performance even on other manufacturer AP devices with the same chip as the hAP ac. The same “other” APs showed good performance from Macbooks which have Broadcom chips. So at the moment this looks 99.9% Intel card issue.
I had ask Dell to send me another Intel 7260ac wireless card and a Broadcom wireless card for testing.
Do you mind let me know which router you had test with Intel wireless card? So I can feedback the result to Dell together with my result, therefore Dell and Intel can start to solve the problem.
We have managed to adjust RouterOS to these Intel cards. Soon we will release rc version where in wireless-rep package test fix for this problem will be included.
We have fixed this in rc21. Please note that we are aware about issue only with Intel cards but it might be the same problem also with other vendor wireless equipment:
Already ask Dell replace the WLAN card to Broadcom one. Can’t test with it anymore.