Protools 12.4 Freezes when Idle on Win7 , Focusrite Scarlett 18i20 USB

[digi98]

PT 12.4
Win 7 Pro
Focusrite Scarlett 18i20 USB
No screen saver,
No drive sleep,
all USB hubs Power Mgmt set to keep on.

If I leave a session open for an hour or more and let sit idle,
and usually I'll turn AOC 27" hdmi monitor off while idle,
I'll come back and the session window has been resized to a smaller size.

And session essentially frozen, sometimes I can close session, but usually I have to kill PT with Task Manager and restart PT.

I've tried power cycling the Scarlett,
only thing I haven't tried was unplugging, replugging in the USB cable to
Scarlett which I read someone did somewhere with a different device.

Any ideas?

Workgroup : MSHOME

Computer
Model : ASUS All Series ASUS MB
Serial Number : System Ser**********
Chassis : Desktop
Mainboard : ASUS Z97-A-USB31
Serial Number : 1511591********
BIOS : AMI (OEM) 2801 11/11/2015
Intel vPro : 9.01.25.1005
Total Memory : 15.9GB DIMM DDR3
Processors
Processor : Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz (4C 8T 4.2GHz/4.4GHz, 4GHz IMC, 4x 256kB L2, 8MB L3)
Socket/Slot : FC LGA1150
Chipset
Memory Controller : ASUS Core (Haswell) DRAM Controller 100MHz, 2x 8GB DIMM DDR3 1.6GHz 128-bit, Integrated Graphics
Memory Module(s)
Memory Module : Crucial BLS8G3D1609DS1S00 8GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 5-39-12-6)
Memory Module : Crucial BLS8G3D1609DS1S00 8GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 5-39-12-6)
Video System
Monitor/Panel : ACR Acer X223W
(1680x1050, 22.0")
Video Adapter : Intel(R) HD Graphics 4600 (20CU 160SP SM5.0 600MHz/1.25GHz, 512kB L2, 192MB DDR3 1.6GHz 128-bit, Integrated Graphics)
Graphics Processor
OpenCL GP Processor : Intel(R) HD Graphics 4600 (160SP 20C 600MHz/1.25GHz, 256kB L2, 1.3GB DDR3 1.6GHz 128-bit, Integrated Graphics)
Compute Shader Processor : Intel(R) HD Graphics 4600 (160SP 20C 600MHz/1.25GHz, 512kB L2, 192MB DDR3 1.6GHz 128-bit, Integrated Graphics)
OpenGL Processor : Intel(R) HD Graphics 4600 (160SP 20C 600MHz/1.25GHz, 512kB L2, 128MB DDR3 1.6GHz 128-bit, Integrated Graphics)
Storage Devices
Samsung SSD 850 EVO 250GB (250GB, SATA600, SSD, SED) : 233GB (C:)
WDC WD10EZEX-00BN5A0 (1TB, SATA600, 3.5", 7200rpm) : 932GB (F:)
WDC WD10EZEX-00BN5A0 (1TB, SATA600, 3.5", 7200rpm) : 932GB (G:)
TSSTcorp CDDVDW SH-224FB (SATA150, DVD+-RW, CD-RW, 512kB Cache) : N/A (D:)
Logical Storage Devices
System Reserved : 100MB (NTFS, 4kB) @ Samsung SSD 850 EVO 250GB (250GB, SATA600, SSD, SED)
WD1 (F:) : 932GB (NTFS, 4kB) @ WDC WD10EZEX-00BN5A0 (1TB, SATA600, 3.5", 7200rpm)
WD2 (G:) : 932GB (NTFS, 4kB) @ WDC WD10EZEX-00BN5A0 (1TB, SATA600, 3.5", 7200rpm)
Hard Disk (C:) : 233GB (NTFS, 4kB) @ Samsung SSD 850 EVO 250GB (250GB, SATA600, SSD, SED)
Optical Drive (D:) : N/A @ TSSTcorp CDDVDW SH-224FB (SATA150, DVD+-RW, CD-RW, 512kB Cache)
Peripherals
LPC Hub Controller 1 : ASUS 9 Series Chipset Family Z97 LPC Controller
Audio Device : ASUS 9 Series Chipset Family HD Audio Controller
Audio Codec : Realtek Semi High Definition Audio
Serial Port(s) : 1
Disk Controller : ASUS 9 Series Chipset Family SATA Controller [AHCI Mode]
USB Controller 1 : ASUS 9 Series Chipset Family USB xHCI Controller
USB Controller 2 : ASUS 9 Series Chipset Family USB EHCI Controller #2
USB Controller 3 : ASUS 9 Series Chipset Family USB EHCI Controller #1
USB Controller 4 : ASUS ASM1142 USB 3.1 Host Controller
SMBus/i2c Controller 1 : Intel ICH SMBus
Printers and Faxes
Printer : Microsoft XPS Document Writer (600x600, Colour)
Fax : Microsoft Shared Fax Driver (200x200)
Network Services
Network Adapter : Intel(R) Ethernet Connection (2) I218-V (Ethernet, 100Mbps)
Operating System
Windows System : Microsoft Windows 7 Ultimate 6.01.7601 (Service Pack 1)
Platform Compliance : x64

[albee1952]

FWIW, I never leave a session open for more than 5-10 minutes. My rig is completely different than yours but I still had similar experience. Now, whenever I am going to be away, I save and close the session(leaving PT open). Never had an issue since

BTW, you don't need to turn the monitor off as flatscreens do not suffer screen burn like the old CRT;s did. Turning the screen off is confusing your graphics processor, hence the screen resolution change

[mjslakeridge]

Your build looks pretty solid, so I don't think that is causing the issue. Have you done all of the Avid recommended optimizations (Additional Resources at the top of this page)? Again, probably not causing your issue, but a very good idea to do all of the optimizations.

As Albee1952 said, save and close your session when you are going to be away for more than a few minutes. If you do that and still leave PT open, does the freeze still happen?

[digi98]

I did have HDMI Audio enabled to the Monitor (which has an audio output jack, but no speakers unfortunately ;(.

This could have been the cause, so I disabled that and will have to try a few more tests with hdmi audio disabled and report back.

Ideally, would be nice to know if it's possible to keep hdmi audio to monitor on so we could send windows sound to monitor via HDMI instead of to PT I/O device like Scarlett.

I didn't even know speakers in hdmi monitors was a thing - sales guy probably could have upsold me at the time if he had 'em, though with my luck they'd probably end up impacting performance with the PT/Scarlett combo anyway, especially with the sample rate change tango.

[digi98]

So far not hanging after disabled hdmi audio to monitor.