@MAtef maybe with the QOS, find the IPAD IP address and put it into high priority section , other devices place in LOW and have the QOS sliders set to High 85% Med 10% low 5% see if that helps.

@MAtef Well you made a big improvement in regards to latency and packet loss issues. Are you gaming on the PC with PUBG-mobile or using it on ur mobile.

@MAtef Yeah just as I suspected! cap your download and upload speed using QOS settings as suggested and try the test again. Cap download to 14 and upload to 2 just for experimental test Click on...

@Hany_Ghoneim This goes for many devices my friend! QOS is not a good system at all.

@MAtef What your describing could be Bufferbloat. Google this and run a test (Waveform). If you get a poor result one way around fixing this and improving the connection and latency/packet loss...

@David-TP I noticed that original poster didnt reply to you David. However I have a AC1200 (Vr400) and have been using the Beta Firmware, as you can see there is still lots of errors happening....