WiFi Speed Drops

I've been experiencing random slow WiFi speeds on my OnePlus 2. Initially I thought it was a problem with my router but changing it didn't make a difference nor using a static DHCP lease.
Disconnecting and reconnecting to the router solves the issue temporarily every time. Any fix for this?

Sent from my OnePlus 2 using Tapatalk

Wifi drops

I installed the new firmware to have MM on my xperia m5, but my wifi always drops...

It drops after 1 minute of stanby... Is this normal or possible?

Signal drops

Is there a way to fix sudden signal drops? Sometimes the signal bar is completely empty just to be almost full a second later. Appears to be random? Is this a known bug?

Sent from my XT1562 using XDA-Developers mobile app

Data drops with G935FD

I'm having issues with my data. It seems to constantly drop even though I have 5 bars. Anyone else having the same issue and know how to fix it?

Sent from my SM-G935F using XDA-Developers mobile app