Thank you.
But where do I change these values?
I cannot find them in electrum_data\config file
I am using the portable version of Electrum
I don't believe you can change those values by using the configuration file, you probably need to change the source code and recompile the file yourself.
Which could be tricky since compiling Windows binary require Linux-based OS[1]. At bare minimum, OP will need to install and configure WSL.