I am running a Dell Precision M6700 workstation (2012ish 3rd Gen Intel i7-3920XM, Nvidia K5000M, 32GB, SSDs, UEFI boot w/option, originally Win7Pro) with new Windows 10 Pro installation starting from scratch, Nvidia's Optimus "Nvidia/Intel GPU autoswitch" is activated in BIOS, I let Dell auto-download all the latest BIOS/drivers for this workstation, and then I have Dell run a performance check. All checks good. Vegas Pro 18 (Build 373) then installs without problem, and though I remain a Vegas newby, it seems to run well. Vegas did autodetect both my Nvidia K5000M GPU and Intel 4000HD GPU. One major bug I have run across is: whenever I click on "Render as..", I get an instant Vegas Pro 18 crash, followed instantly by a "Problem Report" window opening (Formats/Templates window never opens). This is consistent and repeatable, and happens on my two identical M6700 workstations, with same 0xe0434352 Unmanaged Exception. It does not happen on my M6800 workstation, and that 4th-Gen Intel i7-4800MQ K3100M (non-UEFI legacy BIOS boot, with Nvidia Optimus active, originally Win7Pro) renders fine in Windows 10 (in both older Win10 version 1809 and current 1909). My goal is to get my M6700s working, as they have stronger GPUs. I recognize Vegas Pro 18 is only certified for Intel 6th Generation and above, but I know Vegas also hopes to keep working as well as possible on older generation processors. I've done some troubleshooting - temporarily setting (one at a time, with Windows reboots between) Vegas>Options>Preferences>Video>GPUaccel to off, disable Windows firewall, disable QSV - with no change in crash behavior. I then updated (one at a time, with Windows reboots between) Vegas to build 434, Nvidia graphics driver to newer Vegas K5000M recommendation, Intel graphics driver to Vegas 4000HD recommendation (Intel would not install it, as Intel mentioned my M6700 cannot use the newer driver, only the Dell recommended older 4000HD driver), with no change in crash behavior. I then got to the line in the Vegas troubleshooting FAQ that spoke more about Intel GPU issues. I went to BIOS, de-selected Nvidia Optimus (changes workstation from Nvidia/Intel GPU autoselect to Nvidia-only GPU), rebooted, and "Render as.." now gets to the "Formats/Templates" window without crash. I suspect this has fixed the problem. To summarize: I think my failure was singularly associated with Nvidia's Optimus software not being compatible between my aged workstation and Vegas Pro 18, and I needed to unselect Optimus in BIOS, causing the Nvidia GPU to run full-time to be compatible with Vegas Pro 18 (Optimus did still work fine with all of my other programs, including SolidWorks, Creo, Autodesk). I can live with this. The first workstation I installed Vegas on two months ago was my Win10 Legacy-BIOS M4700 with Optimus active (same Intel QM77 Express chipset as my UEFI M6700s) and Vegas failed to run, indicating Optimus, in combination with Intel 3rd Gen CPU and Nvidia K2000M/K5000M GPU, doesn't work with Vegas 18. Specifically, Vegas 18 won't work with the Intel GPU (which is inside the Intel CPU) on my M4700/M6700s. I sent in a "Problem Report" back then and switched to my Legacy-BIOS M6800 (Vegas worked with Optimus active), and later these two M6700s.