2 BSOD's on a 24x7 system ever since Win 10 upgrade on August 11, 2015

Ever since upgrading to Windows 10 from Windows 7 Home Premium on August 11, 2015, I've experienced 2 BSOD's which I am attaching which appears to be when the system is very slow like it's out of resources with 16GB RAM with 90% utilized, hopefully someone can point me in the right direction.

The first crash was caused by the Nvidia Video driver
Kernel security check failure crash

Code:

5: kd> lmvm nvlddmkmstart             end                 module name
fffff801`b5520000 fffff801`b600f000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
    Image name: nvlddmkm.sys
    Timestamp:        Fri Aug 07 05:19:41 2015 (55C423CD)
    CheckSum:         00AAF86B
    ImageSize:        00AEF000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

The second crash was caused by the USB Serial Port driver
Memory management

Code:

2: kd> lmvm ftser2kstart             end                 module name
fffff800`ad550000 fffff800`ad569000   ftser2k    (no symbols)           
    Loaded symbol image file: ftser2k.sys
    Image path: \SystemRoot\system32\drivers\ftser2k.sys
    Image name: ftser2k.sys
    Timestamp:        Thu Oct 22 17:09:05 2009 (4AE07591)
    CheckSum:         0001DDAA
    ImageSize:        00019000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Have you get these crashes more often?

You might want to reduce your startup items in the taskmanager, there are tons of startup items.

Thanks, nVidia driver has been updated twice at least. Not sure what manufacturer provided the 2nd driver. Those are the only two BSOD's I've seen when I was on 16GB of memory which was 90+% utilized and only happened when I opened more than 70 tabs in Google Chrome instead of the usual 60 which causes the system to be slow and unresponsive. After going to 24GB, haven't seen any BSOD's yet as memory is 52% utilized, I have Process Hacker running all the time.

Update:
It seems the USB Serial Driver only crashed once as it's a device I plug-in to transmit for a survey scanner for Nielsen Consumer Panel that I plug in once a week on Saturday for a few minutes, it works every time except for that one time when it BSOD and it works correctly today without BSODing either.