Reloaded game after being away

[Yaks]

old time player( 25 yrs or so). Was off a number of months (death in Fam) came back a few weeks ago and found game unplayable. Deleted and loaded DX11. Now it is unplayable. Stutters and freezes. Never had this issue before. I run DX 10 on this machine. Is that the issue? Do I need to delete and try to load another version? If so where do i get it?
YAKS -Frustrated

[The Fugitive]

Whats un-playable?

You could try the DX9 version of the game, its what most players use as long as your not using VR.

Navigate to C:\Hitech Creations\Aces High III. Locate the AcesHigh9.exe. Right click on it a "create a shortcut" and move it to the desktop.

DOuble clicking that icon will start the DX9 version of the game. All settings will transfer.