Denoise AI keeps crashing LR due to GPU?!? Help please.

I love the Denoise AI feature but it takes forever and consistently crashes my LR, forcing a restart.  I have tried everything.  Graphics drivers are up to date, 100mb allowed in cache, and I even got a cooling fan to help.  Below are photos of the errors I received and the system info after crashing.

It appears LR is using all 4 gb of gpu processing on the last crash, but sometimes it is only using 2.5 gb and it still crashes. 

I'm using an Nvidia geforce mx250 4gb. It's not great but I don't think it should be crashing consistently.  I have the usage for GPU set at "auto" and I've tried custom profiles where I've used all combos of display, image processing, and export.

Thanks for any help, I'm on windows 10.