Dam, I guess that makes sense.
I'm getting 43.76 after diving it by my HPM and I'm running Windows 10 64-bit.
On windows, create a batch file by using a text editor with something like the following:
:loop
start C:\Users\username\Desktop\yam-yvg1900-M8a-win64-ivy-bridge\yam-yvg1900-M8a-win64-ivy-bridge\win64-ivy-bridge\yam.exe --config C:\Users\username\Desktop\yam-yvg1900-M8a-win64-ivy-bridge\yam-yvg1900-M8a-win64-ivy-bridge\win64-ivy-bridge\custom.cfg ...
timeout /t 1800 >null
taskkill /f /im yam.exe >nul
goto loop
In the above example, I am assuming that the config file is stored in the same folder as the yam executable. You should also ensure that the batch file has the extension .bat in order to just click and execute the batch file. You can change the value 1800 to something else as it is the number of seconds the loop will pause before killing the task yam.exe. I chose 1800 for you as it is 30 minutes and it should allow your miner to work without exceeding your calculated 43.76 minutes.