Does not happen all the time. This is random. no particular area or level. But Occasionally when I use F4 to tell my little helper to do something game freezes at his menu. alt tab and use task manager to end game. Haven't seen this on the forum. Help please?

What game are you playing? This forum serves three Descent titles. Are you using the stock game from GOG or a source port? If a source port, which one?

Descent 3?

Which version of the game?
What is your O/S and setup?
Are you using any command switches in the setup?
What is your video renderer set to?

sorry about that. I'm playing descent 3 version 1.4 on windows 10. rendered in opengl.
Everything else in game works fine.
command line: -nointro -height 1080 -width 2560 -aspect 2.37 -framecap 60

You're playing above D3's maximum recommended resolution. Try scaling down to 1920x maximum and see if anything changes (also try testing the game in 4:3 too, just to see if the crashes go away)

Try applying this patch: https://sectorgame.com/d3/downloads/?nav=display&file=864

And add these command lines: -usesmoothing -nomultitexture -himem -hividmem -subpixelcorrect -nocompress -nooutragelogo -nosparkles -nomotionblur -z32bit