Pitch and Tempo Shifting After Recording Acoustic Guitars

After a Windows 10 "update" my Cakewalk icon for Platinum was a blank page with folded corner. I clicked to open it and I got a message, something to the effect, that I did not have an APP to open this. I went to Command Center and reloaded Platinum. After reboot I had the "real icon" but could not launch. I went to my back-up drive with, Platinum loaded, and could launch from that drive. I went back into Command Center did it again and all seemed well. On one day I recorded four simple audio acoustic guitar bed tracks for four songs. The next day two of the four played back at, at least 4 semi tones down in pitch and at a slower clock speed. After a reboot I got three out of four correct.......WTF??? Anyone else out there have had this same experience after a Windows 10 upgrade to "improve your experience"?? I thought by disabling Automatic Upgrades, after the fact, I could avoid this but it is still happening even though no updates have occurred. I do not seem to get tempo or pitch changes, so far, if MIDI data is included.
I have also noticed that many folks post system hardware information, which I understand can be useful in the debugging process, so I will also include mine. Many thanks in advance as I have learned so many things from this forum.....BTW, I did sign the petition for Microsoft to buy Cakewalk!!! At 65 years old I can proudly say I started with Cakewalk at Profession 1.0 for Windows 3.11!!
Software:
Cakewalk Platinum, full version with Life Time updates......stopped aparently.
Computer Info:
- ASUS Z87-A LGA 1150 Intel Z87 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
- Intel Core i5-Haswell 3.4 GHz LGA 1150 84 Quad-Core Desktop Processor
- StarTech 3 Port 2b 1a PCI Express 1394 FireWire Adaptor Card (for my Presonus 24.4.2 FireWire mixer)
- 32GB Ram
- 1Tb SSD HD as primary drive
- 2Tb hard Drive (back-up)
- 3 Tb hard drive (Secondary Back-up)
Hardware:
- Presonus 24.4.2 Firewire mixer
- Roland FA-06
- Roland Integra-7
- Roland (2) JV-880
- BOSS DR-880
- EMU Proteus Orchestral Module
- Korg X-50
- Lots of guitars
 

When an Audio file plays back in correctly this is usually because the sample rate has changed. This may have happened for a few reasons.
1-W10 update has trashed your Audio driver for your interface so try re installing that first. 
2- Your drivers are OK but somehow your settings have been changed. Go into preferences and check your driver settings are still correct. 
3- Another audio device is interfering and changing your settings, Many find they need to disable other audio drivers to make their system stable. The HDMI one is an example.