networking - Internet drops on Ubuntu 16.04 running on Acer E15 - Ask Ubuntu

i dual booting windows 10 , ubuntu 16.04 in acer e5-575g-53vg.

i'm facing issue internet through wifi drops randomly 2 - 3 minutes while on ubuntu. wifi signal full , connected internet in browser says no internet. works on windows , there no drops @ leads me believe driver issue.

lscpi output -

00:00.0 host bridge: intel corporation sky lake host bridge/dram registers         (rev 08) 00:02.0 vga compatible controller: intel corporation sky lake         integrated graphics (rev 07)  00:14.0 usb controller: intel corporation sunrise point-lp usb 3.0         xhci controller (rev 21)  00:14.2 signal processing controller: intel corporation sunrise point-lp         thermal subsystem (rev 21)  00:15.0 signal processing controller: intel corporation sunrise point-lp         serial io i2c controller (rev 21)  00:16.0 communication controller: intel corporation sunrise point-lp         csme heci (rev 21)  00:17.0 sata controller: intel corporation sunrise point-lp sata controller          [ahci mode] (rev 21)  00:1c.0 pci bridge: intel corporation device 9d10 (rev f1)  00:1d.0 pci bridge: intel corporation device 9d18 (rev f1)  00:1d.2 pci bridge: intel corporation device 9d1a (rev f1)  00:1d.3 pci bridge: intel corporation device 9d1b (rev f1)  00:1f.0 isa bridge: intel corporation sunrise point-lp lpc controller (rev 21)  00:1f.2 memory controller: intel corporation sunrise point-lp pmc (rev 21)  00:1f.3 audio device: intel corporation sunrise point-lp hd audio (rev 21) 00:1f.4 smbus: intel corporation sunrise point-lp smbus (rev 21)  01:00.0 3d controller: nvidia corporation device 179c (rev a2)  03:00.0 network controller: qualcomm atheros device 0042 (rev 31)  04:00.0 unassigned class [ff00]: realtek semiconductor co., ltd. device 5287 (rev 01)  04:00.1 ethernet controller: realtek semiconductor co., ltd.         rtl8111/8168/8411 pci express gigabit ethernet controller (rev 12)

what problem , how solve it?

edit -

nw diagnostics during outage - http://paste.ubuntu.com/23358150/

nw outage after outage - http://paste.ubuntu.com/23358156/