Manager Version using in Windows 10 64 bit 3.0 GHZ

Manager V has been installed in Windows 10 x 64-bit. First of all, it takes around 10-15 minutes for windows to open. After then, when I click on my business, buffering begins and takes roughly 5-8 minutes. As a result, it takes 18–25 minutes for me to reach the main page. When I click on the back button, it also creates trouble because it takes so long.
After two minutes, the button for inventory items appears to be loading.

Please assist me with this.

For a start, you are many versions behind so I suggest downloading the latest version and taking it from there