(Mike has been trying to help me fix this, but I figured I'd post in the forum to see if anyone has come across this).

The basics is though the Standalone launches fine, the VST3 or VST2 versions of SGear will crash whatever DAW I'm using. The crash happens immediately, before SGear fully launches. Happens with 2.9.9 and 2.9.8. Happens with both Cubase 12.0.3 and StudioOne 5.5.0.

System details are (I don't know what might be applicable):
Windows 11 21H2
Ryzen 5800X / RTX 3080 / 32GB Ram
Focusrite Scarlett 2i2 as audio driver

It was working just fine a couple weeks back, and then suddenly this started happening. Since Mike's been helping me, I reinstalled my entire OS a few days ago and was able to launch SGear within Cubase once or twice, and then it started crashing again.

Any thoughts, anyone?

How about trying another DAW, like Reaper perhaps?
There's a free demo available.
That would help determine where the issue might be.

Have you applied any Win updates recently?