@Stigern Deco M4 (V2) doesn't support connection preference yet. You can try the 1.7.0 beta firmware from the link that David shared above

@Ivan_Mitov @ARGamingPK1 Just got the 1.6.5 firmware (through the app). Still not showing up in TP-Link website. Other than "improved overall stability" and "fixed some bugs", it also says "after...

@ARGamingPK1 I meant the page that Marvin_S shared (difference between AP mode & Router Mode on Deco) above

@ARGamingPK1 Hate to say this...but probably they changed it recently & forgot to update the date

@Ivan_Mitov Looks like it's only for Bulgaria at this moment, not seeing this firmware on US or Global (EU) site

@SayeemAhmed Ours is Dot Internet....their ONU has Gigabit Ethernet port btw Also, try this: Abnormal WAN Port Speed. Please Check Your WAN Port Connection (Case 1)