I have recently been using this program.
I like to use it.
But the editor is not responsive enough.
After each action in the editor, you need to wait a couple of seconds until the program stops slowing down
It’s very hard to work like that.
Defold Version: 1.2.188
My Notebook (Samsung)
OS: Windows 10 Pro 64-bit
CPU: Intel Core i5 3210M @ 2.50GHz
GPU: Intel HD Graphics 4000 (Samsung)
RAM: 4 Gb.
I run Defold using Win 10 on a laptop of a similar age - but with a faster processor, a dedicated GPU and 8 GB RAM. I rarely experience freezes.
You could try and speed your machine up by adding more RAM. Defold running and maybe a browser window open easily uses 4 GB of RAM, at least on my machine. And the fans are spinning all the time. I at least will replace my laptop soon.
I used Defold on Windows 7 with the HD 4000 for years without trouble (though I had a faster CPU than Sehnsucht does, and on desktop).
Look at your task manager to make sure nothing else is using the CPU, and that you have most of your memory free. Shut down any other programs running.